21042000

Names of 21042000

• Cardinal: 21042000 can be written as Twenty-one million, forty-two thousand.

Scientific notation

• Scientific notation: 2.1042 × 10⁷

Factors of 21042000

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 184

Divisors of 21042000

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 25 28 30 35 36 40 42 45 48 50 56 60 63 70 72 75 80 84 90 100 105 112 120 125 126 140 144 150 167 168 175 180 200 210 225 240 250 252 280 300 315 334 336 350 360 375 400 420 450 500 501 504 525 560 600 630 668 700 720 750 835 840 875 900 1000 1002 1008 1050 1125 1169 1200 1260 1336 1400 1500 1503 1575 1670 1680 1750 1800 2000 2004 2100 2250 2338 2505 2520 2625 2672 2800 3000 3006 3150 3340 3500 3507 3600 4008 4175 4200 4500 4676 5010 5040 5250 5845 6000 6012 6300 6680 7000 7014 7515 7875 8016 8350 8400 9000 9352 10020 10500 10521 11690 12024 12525 12600 13360 14000 14028 15030 15750 16700 17535 18000 18704 20040 20875 21000 21042 23380 24048 25050 25200 28056 29225 30060 31500 33400 35070 37575 40080 41750 42000 42084 46760 50100 52605 56112 58450 60120 62625 63000 66800 70140 75150 83500 84168 87675 93520 100200 105210 116900 120240 125250 126000 140280 146125 150300 167000 168336 175350 187875 200400 210420 233800 250500 263025 280560 292250 300600 334000 350700 375750 420840 438375 467600 501000 526050 584500 601200 701400 751500 841680 876750 1002000 1052100 1169000 1315125 1402800 1503000 1753500 2104200 2338000 2630250 3006000 3507000 4208400 5260500 7014000 10521000 21042000
• Sum of all divisors σ(n): 84494592
• Sum of proper divisors (its aliquot sum) s(n): 63452592
• 21042000 is an abundant number, because the sum of its proper divisors (63452592) is greater than itself. Its abundance is 42410592

Bases of 21042000

• Binary: 1010000010001001101010000₂
• Hexadecimal: 0x1411350
• Base-36: CJ040

Squares and roots of 21042000

• 21042000 squared (21042000²) is 442765764000000
• 21042000 cubed (21042000³) is 9316677206088000000000
• The square root of 21042000 is 4587.1559816513
• The cube root of 21042000 is 276.0762234337

Scales and comparisons

• 21,042,000 seconds is equal to 34 weeks, 5 days, 13 hours.
• To count from 1 to 21,042,000 would take you about seven hours!

  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 21042000 cubic inches would be around 23 feet tall.

Recreational maths with 21042000

• 21042000 backwards is 00024012
• 21042000 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21042000's digits is 9
• More coming soon!