123138937490

Names of 123138937490

• Cardinal: 123138937490 can be written as One hundred twenty-three billion, one hundred thirty-eight million, nine hundred thirty-seven thousand, four hundred ninety.

Scientific notation

• Scientific notation: 1.2313893749 × 10¹¹

Factors of 123138937490

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 2541

Divisors of 123138937490

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 5 10 19 31 38 62 95 155 190 310 361 577 589 722 1154 1178 1805 1907 2885 2945 3610 3814 5770 5890 9535 10963 11191 17887 19070 21926 22382 35774 36233 54815 55955 59117 72466 89435 109630 111910 118234 178870 181165 208297 295585 339853 362330 416594 591170 679706 688427 1041485 1100339 1123223 1376854 1699265 2082970 2200678 2246446 3398530 3442135 5501695 5616115 6457207 6884270 11003390 11232230 12914414 20906441 21341237 32286035 34110509 41812882 42682474 64572070 68221018 104532205 106706185 170552545 209064410 213412370 341105090 397222379 648099671 794444758 1296199342 1986111895 3240498355 3972223790 6480996710 12313893749 24627787498 61569468745 123138937490
• Sum of all divisors σ(n): 242021343744
• Sum of proper divisors (its aliquot sum) s(n): 118882406254
• 123138937490 is a deficient number, because the sum of its proper divisors (118882406254) is less than itself. Its deficiency is 4256531236

Bases of 123138937490

• Binary: 1110010101011101001110001001010010010₂
• Hexadecimal: 0x1CABA71292
• Base-36: 1KKHQS9E

Squares and roots of 123138937490

• 123138937490 squared (123138937490²) is 15163197926166127500100
• 123138937490 cubed (123138937490³) is 1867180081578668409590183868749000
• The square root of 123138937490 is 350911.5807293911
• The cube root of 123138937490 is 4975.0616557933

Scales and comparisons

• 123,138,937,490 seconds is equal to 3,915 years, 22 weeks, 5 days, 4 hours, 24 minutes, 50 seconds.
• To count from 1 to 123,138,937,490 would take you about seven thousand, eight hundred thirty 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 123138937490 cubic inches would be around 414.6 feet tall.

Recreational maths with 123138937490

• 123138937490 backwards is 094739831321
• The number of decimal digits it has is: 12
• The sum of 123138937490's digits is 50
• More coming soon!