21249925242

Names of 21249925242

• Cardinal: 21249925242 can be written as Twenty-one billion, two hundred forty-nine million, nine hundred twenty-five thousand, two hundred forty-two.

Scientific notation

• Scientific notation: 2.1249925242 × 10¹⁰

Factors of 21249925242

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 171

Divisors of 21249925242

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 6 7 13 14 19 21 26 38 39 42 57 78 91 114 127 133 182 247 254 266 273 381 399 494 546 741 762 798 889 1482 1651 1729 1778 2413 2667 3302 3458 4826 4953 5187 5334 7239 9906 10374 11557 14478 16129 16891 23114 31369 32258 33782 34671 48387 50673 62738 69342 94107 96774 101346 112903 188214 209677 219583 225806 306451 338709 419354 439166 612902 629031 658749 677418 919353 1258062 1317498 1467739 1838706 2048383 2145157 2935478 3983863 4096766 4290314 4403217 6145149 6435471 7967726 8806434 11951589 12290298 12870942 14338681 23903178 26628979 27887041 28677362 38919277 43016043 53257958 55774082 77838554 79886937 83661123 86032086 116757831 159773874 167322246 186402853 233515662 272434939 372805706 505950601 544869878 559208559 817304817 1011901202 1118417118 1517851803 1634609634 3035703606 3541654207 7083308414 10624962621 21249925242
• Sum of all divisors σ(n): 55497523200
• Sum of proper divisors (its aliquot sum) s(n): 34247597958
• 21249925242 is an abundant number, because the sum of its proper divisors (34247597958) is greater than itself. Its abundance is 12997672716

Bases of 21249925242

• Binary: 10011110010100110000010000001111010₂
• Hexadecimal: 0x4F298207A
• Base-36: 9RFNN96

Squares and roots of 21249925242

• 21249925242 squared (21249925242²) is 451559322790588758564
• 21249925242 cubed (21249925242³) is 9595601851628157940650587272488
• The square root of 21249925242 is 145773.5409530823
• The cube root of 21249925242 is 2769.8258802655

Scales and comparisons

• 21,249,925,242 seconds is equal to 675 years, 35 weeks, 3 days, 5 hours, 42 seconds.
• To count from 1 to 21,249,925,242 would take you about one thousand, three hundred fifty-one 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 21249925242 cubic inches would be around 230.8 feet tall.

Recreational maths with 21249925242

• 21249925242 backwards is 24252994212
• 21249925242 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21249925242's digits is 42
• More coming soon!