642994734209128

Names of 642994734209128

• Cardinal: 642994734209128 can be written as Six hundred forty-two trillion, nine hundred ninety-four billion, seven hundred thirty-four million, two hundred nine thousand, one hundred twenty-eight.

Scientific notation

• Scientific notation: 6.42994734209128 × 10¹⁴

Factors of 642994734209128

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 293165

Divisors of 642994734209128

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 4 7 8 14 28 49 56 98 127 131 196 254 262 337 392 508 524 674 889 917 1016 1048 1348 1778 1834 2359 2696 3556 3668 4718 6223 6419 7112 7336 9436 12446 12838 16513 16637 18872 24892 25676 33026 33274 42799 44147 49784 51352 66052 66548 85598 88294 116459 132104 133096 171196 176588 232918 292561 299593 309029 342392 353176 465836 585122 599186 618058 815213 931672 1170244 1198372 1236116 1630426 2047927 2097151 2163203 2340488 2396744 2472232 3260852 4095854 4194302 4326406 5606669 6521704 8191708 8388604 8652812 11213338 14335489 16383416 16777208 17305624 22426676 28670978 37155247 38325491 39246683 44853352 57341956 74310494 76650982 78493366 98593057 114683912 148620988 153301964 156986732 197186114 260086729 268278437 274726781 297241976 306603928 313973464 394372228 520173458 536556874 549453562 690151399 788744456 1040346916 1073113748 1098907124 1380302798 1820607103 1877949059 2080693832 2146227496 2197814248 2760605596 3641214206 3755898118 4831059793 4867337357 5521211192 7282428412 7511796236 9662119586 9734674714 12521318239 12915690467 14564856824 15023592472 19324239172 19469349428 25042636478 25831380934 34071361499 38648478344 38938698856 50085272956 51662761868 68142722998 87649227673 90409833269 100170545912 103325523736 136285445996 175298455346 180819666538 238499530493 272570891992 350596910692 361639333076 476999060986 613544593711 632868832883 701193821384 723278666152 953998121972 1227089187422 1265737665766 1640292689309 1907996243944 2454178374844 2531475331532 3280585378618 4908356749688 5062950663064 6561170757236 11482048825163 13122341514472 22964097650326 45928195300652 80374341776141 91856390601304 160748683552282 321497367104564 642994734209128
• Sum of all divisors σ(n): 1428514431252480
• Sum of proper divisors (its aliquot sum) s(n): 785519697043352
• 642994734209128 is an abundant number, because the sum of its proper divisors (785519697043352) is greater than itself. Its abundance is 142524962834224

Bases of 642994734209128

• Binary: 10010010001100110011100000101110011001100001101000₂
• Hexadecimal: 0x248CCE0B99868
• Base-36: 6BX7PB46EG

Squares and roots of 642994734209128

• 642994734209128 squared (642994734209128²) is 413442228220667161507638520384
• 642994734209128 cubed (642994734209128³) is 265841175645577521119470751534233086346865152
• The square root of 642994734209128 is 25357340.8347391193
• The cube root of 642994734209128 is 86311.5943066093

Scales and comparisons

• 642,994,734,209,128 seconds is equal to 20,445,243 years, 32 weeks, 6 days, 23 hours, 25 minutes, 28 seconds.
• To count from 1 to 642,994,734,209,128 would take you about fifty-one million, one hundred thirteen thousand, one hundred nine 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 642994734209128 cubic inches would be around 7192.6 feet tall.

Recreational maths with 642994734209128

• 642994734209128 backwards is 821902437499246
• The number of decimal digits it has is: 15
• The sum of 642994734209128's digits is 70
• More coming soon!