642428421631875

Names of 642428421631875

• Cardinal: 642428421631875 can be written as Six hundred forty-two trillion, four hundred twenty-eight billion, four hundred twenty-one million, six hundred thirty-one thousand, eight hundred seventy-five.

Scientific notation

• Scientific notation: 6.42428421631875 × 10¹⁴

Factors of 642428421631875

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 106

Divisors of 642428421631875

• Number of divisors d(n): 360
• Complete list of divisors:
  1 3 5 9 15 25 27 37 45 61 75 81 111 125 135 183 185 225 243 305 333 375 405 549 555 625 675 915 925 999 1125 1215 1369 1525 1647 1665 1875 2025 2257 2745 2775 2997 3375 4107 4575 4625 4941 4995 5625 6075 6771 6845 7625 8235 8325 8991 10125 11285 12321 13725 13875 14823 14985 16875 20313 20535 22875 23125 24705 24975 30375 33855 34225 36963 38125 41175 41625 44955 50625 50653 56425 60939 61605 68625 69375 74115 74925 83509 101565 102675 110889 114375 123525 124875 151875 151959 169275 171125 182817 184815 205875 208125 224775 250527 253265 282125 304695 308025 332667 343125 370575 374625 417545 455877 507825 513375 548451 554445 617625 624375 751581 759795 846375 855625 914085 924075 1029375 1123875 1252635 1266325 1367631 1410625 1523475 1540125 1663335 1852875 1873125 1874161 2087725 2254743 2279385 2539125 2566875 2742255 2772225 3088125 3089833 3757905 3798975 4102893 4231875 4570425 4620375 5619375 5622483 6263175 6331625 6764229 6838155 7617375 7700625 8316675 9264375 9269499 9370805 10438625 11273715 11396925 12308679 12695625 13711275 13861125 15449165 16867449 18789525 18994875 20292687 20514465 22852125 23101875 27808497 28112415 31315875 31658125 33821145 34190775 38086875 41583375 46347495 46854025 50602347 52193125 56368575 56984625 61543395 68556375 69305625 69343957 77245825 83425491 84337245 93947625 94974375 101463435 102572325 114260625 114323821 139042485 140562075 151807041 156579375 169105725 170953875 207916875 208031871 231737475 234270125 250276473 253011735 281842875 284923125 307716975 342781875 342971463 346719785 386229125 417127455 421686225 455421123 469738125 507317175 512861625 571619105 624095613 695212425 702810375 750829419 759035205 845528625 854769375 1028914389 1040159355 1158687375 1171350625 1251382365 1265058675 1409214375 1538584875 1714857315 1733598925 1872286839 1931145625 2085637275 2108431125 2277105615 2536585875 2564308125 2858095525 3086743167 3120478065 3476062125 3514051875 3754147095 3795176025 4227643125 4229981377 5144571945 5200796775 5616860517 5793436875 6256911825 6325293375 7692924375 8574286575 8667994625 9260229501 9361434195 10428186375 10542155625 11385528075 12682929375 12689944131 14290477625 15433715835 15602390325 16850581551 17380310625 18770735475 18975880125 21149906885 25722859725 26003983875 27780688503 28084302585 31284559125 31626466875 38069832393 42871432875 43339973125 46301147505 46807170975 52140931875 56927640375 63449720655 71452388125 77168579175 78011951625 84252907755 93853677375 94879400625 105749534425 114209497179 128614298625 130019919375 138903442515 140421512925 156422795625 190349161965 214357164375 231505737525 234035854875 284638201875 317248603275 342628491537 385842895875 390059758125 421264538775 469268386875 528747672125 571047485895 643071493125 694517212575 702107564625 951745809825 1027885474611 1157528687625 1170179274375 1586243016375 1713142457685 1929214479375 2106322693875 2643738360625 2855237429475 3472586062875 3510537823125 4758729049125 5139427373055 5787643438125 7931215081875 8565712288425 10531613469375 14276187147375 17362930314375 23793645245625 25697136865275 42828561442125 71380935736875 128485684326375 214142807210625 642428421631875
• Sum of all divisors σ(n): 1256180219518224
• Sum of proper divisors (its aliquot sum) s(n): 613751797886349
• 642428421631875 is a deficient number, because the sum of its proper divisors (613751797886349) is less than itself. Its deficiency is 28676623745526

Bases of 642428421631875

• Binary: 10010010000100100100000101110111010110111110000011₂
• Hexadecimal: 0x2484905DD6F83
• Base-36: 6BPZJJ896R

Squares and roots of 642428421631875

• 642428421631875 squared (642428421631875²) is 412714276920422158438016015625
• 642428421631875 cubed (642428421631875³) is 265139381506927383627838206653701447998046875
• The square root of 642428421631875 is 25346171.7352320289
• The cube root of 642428421631875 is 86286.2474435247

Scales and comparisons

• 642,428,421,631,875 seconds is equal to 20,427,236 years, 33 weeks, 4 days, 6 hours, 11 minutes, 15 seconds.
• To count from 1 to 642,428,421,631,875 would take you about fifty-one million, sixty-eight thousand and ninety-one years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 642428421631875 cubic inches would be around 7190.5 feet tall.

Recreational maths with 642428421631875

• 642428421631875 backwards is 578136124824246
• The number of decimal digits it has is: 15
• The sum of 642428421631875's digits is 63
• More coming soon!