642002841

Names of 642002841

• Cardinal: 642002841 can be written as Six hundred forty-two million, two thousand, eight hundred forty-one.

Scientific notation

• Scientific notation: 6.42002841 × 10⁸

Factors of 642002841

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 305

Divisors of 642002841

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 9 17 23 27 29 51 69 81 87 153 207 233 243 261 391 459 493 621 667 699 783 1173 1377 1479 1863 2001 2097 2349 3519 3961 4131 4437 5359 5589 6003 6291 6757 7047 10557 11339 11883 13311 16077 18009 18873 20271 31671 34017 35649 39933 48231 54027 56619 60813 91103 95013 102051 106947 114869 119799 144693 155411 162081 182439 273309 306153 320841 344607 434079 466233 547317 819927 918459 962523 1033821 1302237 1398699 1641951 2459781 2641987 2755377 3101463 4196097 7379343 7925961 9304389 12588291 22138029 23777883 27913167 37764873 71333649 214000947 642002841
• Sum of all divisors σ(n): 1103880960
• Sum of proper divisors (its aliquot sum) s(n): 461878119
• 642002841 is a deficient number, because the sum of its proper divisors (461878119) is less than itself. Its deficiency is 180124722

Bases of 642002841

• Binary: 100110010001000010111110011001₂
• Hexadecimal: 0x26442F99
• Base-36: AM8CK9

Squares and roots of 642002841

• 642002841 squared (642002841²) is 412167647852071281
• 642002841 cubed (642002841³) is 264612800889317310136509321
• The square root of 642002841 is 25337.7749812409
• The cube root of 642002841 is 862.6718961737

Scales and comparisons

• 642,002,841 seconds is equal to 20 years, 21 weeks, 3 days, 14 hours, 7 minutes, 21 seconds.
• To count from 1 to 642,002,841 would take you about 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 642002841 cubic inches would be around 71.9 feet tall.

Recreational maths with 642002841

• 642002841 backwards is 148200246
• 642002841 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 642002841's digits is 27
• More coming soon!