128121742896875

Names of 128121742896875

• Cardinal: 128121742896875 can be written as One hundred twenty-eight trillion, one hundred twenty-one billion, seven hundred forty-two million, eight hundred ninety-six thousand, eight hundred seventy-five.

Scientific notation

• Scientific notation: 1.28121742896875 × 10¹⁴

Factors of 128121742896875

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 54

Divisors of 128121742896875

• Number of divisors d(n): 360
• Complete list of divisors:
  1 5 7 13 25 29 35 49 65 91 125 145 169 175 203 245 325 343 377 455 625 637 725 841 845 875 1015 1183 1225 1421 1625 1715 1885 2275 2639 3125 3185 3625 4205 4225 4375 4459 4901 5075 5887 5915 6125 7105 8125 8281 8575 9425 9947 10933 11375 13195 15925 18125 18473 21025 21125 21875 22295 24389 24505 25375 29435 29575 30625 34307 35525 40625 41209 41405 42875 47125 49735 54665 56875 57967 65975 76531 79625 90625 92365 105125 105625 111475 121945 122525 126875 129311 142129 147175 147875 153125 170723 171535 177625 206045 207025 214375 235625 240149 248675 273325 284375 288463 289835 317057 329875 382655 398125 461825 525625 528125 535717 557375 609725 612625 634375 646555 707281 710645 735875 739375 853615 857675 888125 994903 1030225 1035125 1071875 1178125 1195061 1200745 1243375 1366625 1442315 1449175 1585285 1649375 1681043 1913275 1990625 2219399 2309125 2628125 2678585 2786875 3048625 3063125 3232775 3536405 3553225 3679375 3696875 3750019 4121741 4268075 4288375 4440625 4950967 4974515 5151125 5175625 5975305 6003725 6216875 6833125 6964321 7211575 7245875 7926425 8246875 8365427 8405215 9194653 9566375 11096995 11545625 13392925 13934375 15243125 15315625 15535793 16163875 17682025 17766125 18396875 18750095 20608705 21340375 21441875 24754835 24872575 25755625 25878125 28852187 29876525 30018625 31084375 34165625 34656769 34821605 36057875 36229375 39632125 41827135 42026075 45973265 47831875 48750247 55484975 57728125 64362571 66964625 76215625 77678965 80819375 88410125 88830625 93750475 103043525 106701875 107209375 108750551 119530489 123774175 124362875 128778125 144260935 149382625 150093125 173283845 174108025 180289375 181146875 198160625 201965309 209135675 210130375 229866325 239159375 242597383 243751235 277424875 321812855 334823125 388394825 404096875 442050625 444153125 450537997 468752375 515217625 533509375 543752755 597652445 618870875 621814375 721304675 746913125 750465625 836713423 866419225 870540125 901446875 990803125 1009826545 1045678375 1050651875 1149331625 1212986915 1218756175 1387124375 1413757163 1609064275 1674115625 1941974125 2210253125 2252689985 2343761875 2576088125 2718763775 2988262225 3094354375 3109071875 3153765979 3606523375 3734565625 4183567115 4332096125 4352700625 5049132725 5228391875 5253259375 5746658125 5856993961 6064934575 6093780875 6935621875 7068785815 8045321375 9709870625 11263449925 11718809375 12880440625 13593818875 14941311125 15471771875 15768829895 18032616875 20917835575 21660480625 21763503125 25245663625 26141959375 28733290625 29284969805 30324672875 30468904375 35343929075 40226606875 40998957727 48549353125 56317249625 67969094375 74706555625 78844149475 90163084375 104589177875 108302403125 126228318125 146424849025 151623364375 152344521875 176719645375 201133034375 204994788635 281586248125 339845471875 373532778125 394220747375 522945889375 631141590625 732124245125 758116821875 883598226875 1024973943175 1407931240625 1971103736875 2614729446875 3660621225625 4417991134375 5124869715875 9855518684375 18303106128125 25624348579375 128121742896875
• Sum of all divisors σ(n): 209447536687200
• Sum of proper divisors (its aliquot sum) s(n): 81325793790325
• 128121742896875 is a deficient number, because the sum of its proper divisors (81325793790325) is less than itself. Its deficiency is 46795949106550

Bases of 128121742896875

• Binary: 11101001000011010101010111110010010111011101011₂
• Hexadecimal: 0x7486AAF92EEB
• Base-36: 19EYBDPR6Z

Squares and roots of 128121742896875

• 128121742896875 squared (128121742896875²) is 16415181002932939516884765625
• 128121742896875 cubed (128121742896875³) is 2103141600063440782089394714342742919921875
• The square root of 128121742896875 is 11319087.5470099179
• The cube root of 128121742896875 is 50412.8146869071

Scales and comparisons

• 128,121,742,896,875 seconds is equal to 4,073,875 years, 6 weeks, 18 hours, 54 minutes, 35 seconds.
• To count from 1 to 128,121,742,896,875 would take you about ten million, one hundred eighty-four thousand, six hundred eighty-seven 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 128121742896875 cubic inches would be around 4201.1 feet tall.

Recreational maths with 128121742896875

• 128121742896875 backwards is 578698247121821
• The number of decimal digits it has is: 15
• The sum of 128121742896875's digits is 71
• More coming soon!