209721398042

Names of 209721398042

• Cardinal: 209721398042 can be written as Two hundred nine billion, seven hundred twenty-one million, three hundred ninety-eight thousand and forty-two.

Scientific notation

• Scientific notation: 2.09721398042 × 10¹¹

Factors of 209721398042

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 74

Divisors of 209721398042

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 13 17 19 23 26 34 38 46 169 221 247 289 299 323 338 391 437 442 494 578 598 646 782 874 2873 3211 3757 3887 4199 4913 5083 5491 5681 5746 6422 6647 7429 7514 7774 8398 9826 10166 10982 11362 13294 14858 48841 54587 63869 66079 71383 73853 83521 86411 93347 96577 97682 109174 112999 126293 127738 132158 142766 147706 167042 172822 186694 193154 225998 252586 830297 927979 1085773 1123343 1213511 1255501 1419857 1468987 1586899 1641809 1660594 1855958 1920983 2146981 2171546 2246686 2427022 2511002 2839714 2937974 3173798 3283618 3841966 4293962 14115049 15775643 18458141 19096831 20629687 21343517 24972779 26977283 27910753 28230098 31551286 32656711 36498677 36916282 38193662 41259374 42687034 49945558 53954566 55821506 65313422 72997354 239955833 268185931 324646127 350704679 362839789 424537243 474482801 479911666 536371862 620477509 649292254 701409358 725679578 849074486 948965602 1240955018 4559160827 5518984159 6168276413 8066207617 9118321654 11037968318 12336552826 16132415234 104860699021 209721398042
• Sum of all divisors σ(n): 397545744960
• Sum of proper divisors (its aliquot sum) s(n): 187824346918
• 209721398042 is a deficient number, because the sum of its proper divisors (187824346918) is less than itself. Its deficiency is 21897051124

Bases of 209721398042

• Binary: 11000011010100010111101001001100011010₂
• Hexadecimal: 0x30D45E931A
• Base-36: 2OCEPEE2

Squares and roots of 209721398042

• 209721398042 squared (209721398042²) is 43983064796691001433764
• 209721398042 cubed (209721398042³) is 9224189839333911316170012542290088
• The square root of 209721398042 is 457953.4889505701
• The cube root of 209721398042 is 5941.2922366449

Scales and comparisons

• 209,721,398,042 seconds is equal to 6,668 years, 25 weeks, 3 days, 23 hours, 54 minutes, 2 seconds.
• To count from 1 to 209,721,398,042 would take you about thirteen thousand, three hundred thirty-six 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 209721398042 cubic inches would be around 495.1 feet tall.

Recreational maths with 209721398042

• 209721398042 backwards is 240893127902
• The number of decimal digits it has is: 12
• The sum of 209721398042's digits is 47
• More coming soon!