123971212491

Names of 123971212491

• Cardinal: 123971212491 can be written as One hundred twenty-three billion, nine hundred seventy-one million, two hundred twelve thousand, four hundred ninety-one.

Scientific notation

• Scientific notation: 1.23971212491 × 10¹¹

Factors of 123971212491

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 2028

Divisors of 123971212491

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 7 21 23 69 161 409 483 757 829 1227 2271 2487 2863 5299 5803 8589 9407 15897 17409 17411 19067 28221 52233 57201 65849 121877 133469 197547 309613 339061 365631 400407 627553 928839 1017183 1882659 2167291 2373427 4392871 6501873 7120281 7121099 7798403 13178613 14433719 21363297 23395209 43301157 49847693 54588821 101036033 149543079 163766463 256669177 303108099 770007531 1796684239 5390052717 5903391071 17710173213 41323737497 123971212491
• Sum of all divisors σ(n): 198103603200
• Sum of proper divisors (its aliquot sum) s(n): 74132390709
• 123971212491 is a deficient number, because the sum of its proper divisors (74132390709) is less than itself. Its deficiency is 49838821782

Bases of 123971212491

• Binary: 1110011011101010000101001010011001011₂
• Hexadecimal: 0x1CDD4294CB
• Base-36: 1KY99BRF

Squares and roots of 123971212491

• 123971212491 squared (123971212491²) is 15368861526488674425081
• 123971212491 cubed (123971212491³) is 1905296398045082082256633910886771
• The square root of 123971212491 is 352095.4593444795
• The cube root of 123971212491 is 4986.2450280617

Scales and comparisons

• 123,971,212,491 seconds is equal to 3,941 years, 46 weeks, 5 days, 23 hours, 54 minutes, 51 seconds.
• To count from 1 to 123,971,212,491 would take you about seven thousand, eight hundred eighty-three 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 123971212491 cubic inches would be around 415.5 feet tall.

Recreational maths with 123971212491

• 123971212491 backwards is 194212179321
• The number of decimal digits it has is: 12
• The sum of 123971212491's digits is 42
• More coming soon!