121905081388920

Names of 121905081388920

• Cardinal: 121905081388920 can be written as One hundred twenty-one trillion, nine hundred five billion, eighty-one million, three hundred eighty-eight thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.2190508138892 × 10¹⁴

Factors of 121905081388920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 35329

Divisors of 121905081388920

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 4639 9278 11299 13917 18556 19381 22598 23195 27834 33897 37112 38762 45196 46390 55668 56495 58143 67794 69585 77524 90392 92780 96905 111336 112990 116286 135588 139170 155048 169485 185560 193810 225980 232572 271176 278340 290715 338970 387620 451960 465144 556680 581430 677940 775240 1162860 1355880 2325720 52416061 89908459 104832122 157248183 179816918 209664244 218985919 262080305 269725377 314496366 359633836 419328488 437971838 449542295 524160610 539450754 628992732 656957757 719267672 786240915 875943676 899084590 1048321220 1078901508 1094929595 1257985464 1313915514 1348626885 1572481830 1751887352 1798169180 2096642440 2157803016 2189859190 2627831028 2697253770 3144963660 3284788785 3596338360 4379718380 5255662056 5394507540 6289927320 6569577570 8759436760 10789015080 13139155140 26278310280 1015875678241 2031751356482 3047627034723 4063502712964 5079378391205 6095254069446 8127005425928 10158756782410 12190508138892 15238135173615 20317513564820 24381016277784 30476270347230 40635027129640 60952540694460 121905081388920
• Sum of all divisors σ(n): 365845328640000
• Sum of proper divisors (its aliquot sum) s(n): 243940247251080
• 121905081388920 is an abundant number, because the sum of its proper divisors (243940247251080) is greater than itself. Its abundance is 122035165862160

Bases of 121905081388920

• Binary: 11011101101111100111101000100101000111101111000₂
• Hexadecimal: 0x6EDF3D128F78
• Base-36: 177MF5YO3C

Squares and roots of 121905081388920

• 121905081388920 squared (121905081388920²) is 14860848868439209356298766400
• 121905081388920 cubed (121905081388920³) is 1811612990815521502068936281043794628288000
• The square root of 121905081388920 is 11041063.4174847487
• The cube root of 121905081388920 is 49583.8908551779

Scales and comparisons

• 121,905,081,388,920 seconds is equal to 3,876,204 years, 26 weeks, 4 days, 2 minutes.
• To count from 1 to 121,905,081,388,920 would take you about nine million, six hundred ninety thousand, five hundred eleven 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 121905081388920 cubic inches would be around 4132 feet tall.

Recreational maths with 121905081388920

• 121905081388920 backwards is 029883180509121
• The number of decimal digits it has is: 15
• The sum of 121905081388920's digits is 57
• More coming soon!