642171563145

Names of 642171563145

• Cardinal: 642171563145 can be written as Six hundred forty-two billion, one hundred seventy-one million, five hundred sixty-three thousand, one hundred forty-five.

Scientific notation

• Scientific notation: 6.42171563145 × 10¹¹

Factors of 642171563145

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 3213

Divisors of 642171563145

• Number of divisors d(n): 108
• Complete list of divisors:
  1 3 5 7 9 15 21 29 35 45 49 63 87 105 145 147 203 245 261 315 435 441 609 735 1015 1305 1421 1827 2205 3045 3169 4263 7105 9135 9507 12789 15845 21315 22183 28521 47535 63945 66549 91901 110915 142605 155281 199647 275703 332745 459505 465843 643307 776405 827109 998235 1378515 1397529 1929921 2329215 3216535 4135545 4503149 5789763 6987645 9649605 10042561 13509447 22515745 28948815 30127683 40528341 50212805 67547235 70297927 90383049 150638415 202641705 210893781 291234269 351489635 451915245 492085489 632681343 873702807 1054468905 1456171345 1476256467 2038639883 2460427445 2621108421 3163406715 4368514035 4428769401 6115919649 7381282335 10193199415 13105542105 14270479181 18347758947 22143847005 30579598245 42811437543 71352395905 91738794735 128434312629 214057187715 642171563145
• Sum of all divisors σ(n): 1339899600780
• Sum of proper divisors (its aliquot sum) s(n): 697728037635
• 642171563145 is an abundant number, because the sum of its proper divisors (697728037635) is greater than itself. Its abundance is 55556474490

Bases of 642171563145

• Binary: 1001010110000100011010000110110010001001₂
• Hexadecimal: 0x9584686C89
• Base-36: 870CD9C9

Squares and roots of 642171563145

• 642171563145 squared (642171563145²) is 412384316512092722291025
• 642171563145 cubed (642171563145³) is 264821481151053017768805909854273625
• The square root of 642171563145 is 801356.0776240485
• The cube root of 642171563145 is 8627.4746131377

Scales and comparisons

• 642,171,563,145 seconds is equal to 20,419 years, 3 weeks, 4 days, 5 hours, 45 minutes, 45 seconds.
• To count from 1 to 642,171,563,145 would take you about forty thousand, eight hundred thirty-eight 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 642171563145 cubic inches would be around 719 feet tall.

Recreational maths with 642171563145

• 642171563145 backwards is 541365171246
• 642171563145 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 642171563145's digits is 45
• More coming soon!