42081390

Names of 42081390

• Cardinal: 42081390 can be written as Forty-two million, eighty-one thousand, three hundred ninety.

Scientific notation

• Scientific notation: 4.208139 × 10⁷

Factors of 42081390

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 673

Divisors of 42081390

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 5 6 9 10 13 15 18 19 26 27 30 38 39 45 54 57 65 78 90 95 114 117 130 135 171 190 195 234 247 270 285 342 351 390 494 513 570 585 631 702 741 855 1026 1170 1235 1262 1482 1710 1755 1893 2223 2470 2565 3155 3510 3705 3786 4446 5130 5679 6310 6669 7410 8203 9465 11115 11358 11989 13338 16406 17037 18930 22230 23978 24609 28395 33345 34074 35967 41015 49218 56790 59945 66690 71934 73827 82030 85185 107901 119890 123045 147654 155857 170370 179835 215802 221481 246090 311714 323703 359670 369135 442962 467571 539505 647406 738270 779285 935142 1079010 1107405 1402713 1558570 1618515 2214810 2337855 2805426 3237030 4208139 4675710 7013565 8416278 14027130 21040695 42081390
• Sum of all divisors σ(n): 127411200
• Sum of proper divisors (its aliquot sum) s(n): 85329810
• 42081390 is an abundant number, because the sum of its proper divisors (85329810) is greater than itself. Its abundance is 43248420

Bases of 42081390

• Binary: 10100000100001110001101110₂
• Hexadecimal: 0x2821C6E
• Base-36: P1Y7I

Squares and roots of 42081390

• 42081390 squared (42081390²) is 1770843384332100
• 42081390 cubed (42081390³) is 74519551084998989619000
• The square root of 42081390 is 6487.0170340457
• The cube root of 42081390 is 347.8270543745

Scales and comparisons

• 42,081,390 seconds is equal to 1 year, 17 weeks, 4 days, 1 hour, 16 minutes, 30 seconds.
• To count from 1 to 42,081,390 would take you about two 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 42081390 cubic inches would be around 29 feet tall.

Recreational maths with 42081390

• 42081390 backwards is 09318024
• 42081390 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 42081390's digits is 27
• More coming soon!