129742462388

Names of 129742462388

• Cardinal: 129742462388 can be written as One hundred twenty-nine billion, seven hundred forty-two million, four hundred sixty-two thousand, three hundred eighty-eight.

Scientific notation

• Scientific notation: 1.29742462388 × 10¹¹

Factors of 129742462388

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 884

Divisors of 129742462388

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 4 7 11 14 19 22 28 38 44 76 77 133 154 209 257 266 281 307 308 418 514 532 562 614 836 1028 1124 1228 1463 1799 1967 2149 2827 2926 3091 3377 3598 3934 4298 4883 5339 5654 5833 5852 6182 6754 7196 7868 8596 9766 10678 11308 11666 12364 13508 19532 19789 21356 21637 23332 23639 34181 37373 39578 40831 43274 47278 53713 58729 64163 68362 72217 74746 78899 79156 81662 86267 86548 94556 107426 117458 128326 136724 144434 149492 157798 163324 172534 214852 234916 256652 288868 315596 345068 375991 411103 449141 505519 552293 603869 751982 794387 822206 867889 898282 948937 1011038 1104586 1207738 1372123 1499081 1503964 1588774 1639073 1644412 1735778 1796564 1897874 2022076 2209172 2415476 2744246 2998162 3177548 3278146 3471556 3795748 5488492 5560709 5996324 6075223 6556292 6642559 9604861 10493567 11121418 11473511 12150446 13285118 15093353 16489891 18029803 19209722 20987134 22170619 22242836 22947022 24300892 26570236 30186706 32979782 36059606 38419444 41974268 44341238 45894044 60373412 65959564 72119212 88682476 105653471 115429237 126208621 155194333 211306942 230858474 243876809 252417242 310388666 421241761 422613884 461716948 487753618 504834484 620777332 842483522 975507236 1684967044 1707137663 2948692327 3414275326 4633659371 5897384654 6828550652 9267318742 11794769308 18534637484 32435615597 64871231194 129742462388
• Sum of all divisors σ(n): 301174917120
• Sum of proper divisors (its aliquot sum) s(n): 171432454732
• 129742462388 is an abundant number, because the sum of its proper divisors (171432454732) is greater than itself. Its abundance is 41689992344

Bases of 129742462388

• Binary: 1111000110101010000001101110110110100₂
• Hexadecimal: 0x1E3540DDB4
• Base-36: 1NLPB8OK

Squares and roots of 129742462388

• 129742462388 squared (129742462388²) is 16833106546501594662544
• 129742462388 cubed (129742462388³) is 2183968692982679718487136472395072
• The square root of 129742462388 is 360197.8100821827
• The cube root of 129742462388 is 5062.4495941395

Scales and comparisons

• 129,742,462,388 seconds is equal to 4,125 years, 21 weeks, 1 day, 20 hours, 53 minutes, 8 seconds.
• To count from 1 to 129,742,462,388 would take you about eight thousand, two hundred fifty 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 129742462388 cubic inches would be around 421.9 feet tall.

Recreational maths with 129742462388

• 129742462388 backwards is 883264247921
• The number of decimal digits it has is: 12
• The sum of 129742462388's digits is 56
• More coming soon!