642456149842

Names of 642456149842

• Cardinal: 642456149842 can be written as Six hundred forty-two billion, four hundred fifty-six million, one hundred forty-nine thousand, eight hundred forty-two.

Scientific notation

• Scientific notation: 6.42456149842 × 10¹¹

Factors of 642456149842

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 12563

Divisors of 642456149842

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 13 17 26 34 43 86 221 442 559 731 1118 1462 3967 7934 8521 9503 17042 19006 51571 67439 103142 110773 134878 144857 170581 221546 289714 341162 366403 732806 876707 1753414 1883141 2217553 2899877 3766282 4435106 4763239 5799754 6228851 9526478 12457702 33802807 37698401 67605614 75396802 80975063 161950126 439436491 574647719 878872982 1149295438 1453520701 2907041402 7470420347 14940840694 18895769113 24709851917 37791538226 49419703834 321228074921 642456149842
• Sum of all divisors σ(n): 1124832006144
• Sum of proper divisors (its aliquot sum) s(n): 482375856302
• 642456149842 is a deficient number, because the sum of its proper divisors (482375856302) is less than itself. Its deficiency is 160080293540

Bases of 642456149842

• Binary: 1001010110010101010111101101111101010010₂
• Hexadecimal: 0x95955EDF52
• Base-36: 8751SXUA

Squares and roots of 642456149842

• 642456149842 squared (642456149842²) is 412749904469806356624964
• 642456149842 cubed (642456149842³) is 265173714473325098216571960981855688
• The square root of 642456149842 is 801533.6236503119
• The cube root of 642456149842 is 8628.7488841891

Scales and comparisons

• 642,456,149,842 seconds is equal to 20,428 years, 6 weeks, 1 day, 1 hour, 37 minutes, 22 seconds.
• To count from 1 to 642,456,149,842 would take you about forty thousand, eight hundred fifty-six 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 642456149842 cubic inches would be around 719.1 feet tall.

Recreational maths with 642456149842

• 642456149842 backwards is 248941654246
• The number of decimal digits it has is: 12
• The sum of 642456149842's digits is 55
• More coming soon!