129421029790

Names of 129421029790

• Cardinal: 129421029790 can be written as One hundred twenty-nine billion, four hundred twenty-one million, twenty-nine thousand, seven hundred ninety.

Scientific notation

• Scientific notation: 1.2942102979 × 10¹¹

Factors of 129421029790

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 388

Divisors of 129421029790

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 5 10 13 26 37 65 74 130 169 185 331 338 370 481 662 845 962 1369 1655 1690 2197 2405 2738 3310 4303 4394 4810 6253 6845 8606 10985 12247 12506 13690 17797 21515 21970 24494 28561 31265 35594 43030 55939 57122 61235 62530 81289 88985 111878 122470 142805 159211 162578 177970 231361 279695 285610 318422 406445 453139 462722 559390 727207 796055 812890 906278 1056757 1156805 1454414 1592110 2069743 2113514 2265695 2313610 3007693 3636035 4139486 4531390 5283785 5890807 6015386 7272070 9453691 10348715 10567570 11781614 15038465 18907382 20697430 26906659 29454035 30076930 39100009 47268455 53813318 58908070 76580491 78200018 94536910 134533295 153160982 195500045 269066590 349786567 382902455 391000090 699573134 765804910 995546383 1748932835 1991092766 3497865670 4977731915 9955463830 12942102979 25884205958 64710514895 129421029790
• Sum of all divisors σ(n): 260159106312
• Sum of proper divisors (its aliquot sum) s(n): 130738076522
• 129421029790 is an abundant number, because the sum of its proper divisors (130738076522) is greater than itself. Its abundance is 1317046732

Bases of 129421029790

• Binary: 1111000100010000110000011000110011110₂
• Hexadecimal: 0x1E2218319E
• Base-36: 1NGDXTPA

Squares and roots of 129421029790

• 129421029790 squared (129421029790²) is 16749802951904067444100
• 129421029790 cubed (129421029790³) is 2167776746815006249905035259739000
• The square root of 129421029790 is 359751.3443894269
• The cube root of 129421029790 is 5058.2654538673

Scales and comparisons

• 129,421,029,790 seconds is equal to 4,115 years, 9 weeks, 5 days, 14 hours, 3 minutes, 10 seconds.
• To count from 1 to 129,421,029,790 would take you about eight thousand, two 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 129421029790 cubic inches would be around 421.5 feet tall.

Recreational maths with 129421029790

• 129421029790 backwards is 097920124921
• The number of decimal digits it has is: 12
• The sum of 129421029790's digits is 46
• More coming soon!