642508902321

Names of 642508902321

• Cardinal: 642508902321 can be written as Six hundred forty-two billion, five hundred eight million, nine hundred two thousand, three hundred twenty-one.

Scientific notation

• Scientific notation: 6.42508902321 × 10¹¹

Factors of 642508902321

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 2547

Divisors of 642508902321

• Number of divisors d(n): 128
• Complete list of divisors:
  1 3 11 13 17 33 39 51 143 181 187 221 233 429 543 561 663 699 1991 2089 2353 2431 2563 3029 3077 3961 5973 6267 7059 7293 7689 9087 9231 11883 22979 25883 27157 33319 33847 35513 40001 42173 43571 51493 68937 77649 81471 99957 101541 106539 120003 126519 130713 154479 298727 378109 390643 440011 461669 463903 486737 548249 566423 716941 896181 1134327 1171929 1320033 1385007 1391709 1460211 1644747 1699269 2150823 4159199 4915417 5078359 5354107 6030739 6327581 6427853 7886351 8274529 9320233 12477597 14746251 15235077 16062321 18092217 18982743 19283559 23659053 24823587 27960699 54069587 69603391 70706383 83562089 88099397 91019819 102522563 107568877 162208761 208810173 212119149 250686267 264298191 273059457 307567689 322706631 919182979 969093367 1145292161 1183257647 1497689749 2757548937 2907280101 3435876483 3549772941 4493069247 12598213771 16474587239 19469966737 37794641313 49423761717 58409900211 214169634107 642508902321
• Sum of all divisors σ(n): 1076651896320
• Sum of proper divisors (its aliquot sum) s(n): 434142993999
• 642508902321 is a deficient number, because the sum of its proper divisors (434142993999) is less than itself. Its deficiency is 208365908322

Bases of 642508902321

• Binary: 1001010110011000100000111100111110110001₂
• Hexadecimal: 0x959883CFB1
• Base-36: 875X7LWX

Squares and roots of 642508902321

• 642508902321 squared (642508902321²) is 412817689561736319187041
• 642508902321 cubed (642508902321³) is 265239040579002542003704603998022161
• The square root of 642508902321 is 801566.5301901021
• The cube root of 642508902321 is 8628.9850483933

Scales and comparisons

• 642,508,902,321 seconds is equal to 20,429 years, 41 weeks, 2 days, 15 hours, 5 minutes, 21 seconds.
• To count from 1 to 642,508,902,321 would take you about forty thousand, eight hundred fifty-nine 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 642508902321 cubic inches would be around 719.1 feet tall.

Recreational maths with 642508902321

• 642508902321 backwards is 123209805246
• The number of decimal digits it has is: 12
• The sum of 642508902321's digits is 42
• More coming soon!