42121728

Names of 42121728

• Cardinal: 42121728 can be written as Forty-two million, one hundred twenty-one thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 4.2121728 × 10⁷

Factors of 42121728

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 293

Divisors of 42121728

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 16 18 22 24 27 32 33 36 44 48 54 64 66 72 88 96 99 108 128 132 144 176 192 198 216 256 264 277 288 297 352 384 396 432 512 528 554 576 594 704 768 792 831 864 1056 1108 1152 1188 1408 1536 1584 1662 1728 2112 2216 2304 2376 2493 2816 3047 3168 3324 3456 4224 4432 4608 4752 4986 5632 6094 6336 6648 6912 7479 8448 8864 9141 9504 9972 12188 12672 13296 13824 14958 16896 17728 18282 19008 19944 24376 25344 26592 27423 29916 35456 36564 38016 39888 48752 50688 53184 54846 59832 70912 73128 76032 79776 82269 97504 106368 109692 119664 141824 146256 152064 159552 164538 195008 212736 219384 239328 292512 319104 329076 390016 425472 438768 478656 585024 638208 658152 780032 877536 957312 1170048 1276416 1316304 1560064 1755072 1914624 2340096 2632608 3510144 3829248 4680192 5265216 7020288 10530432 14040576 21060864 42121728
• Sum of all divisors σ(n): 136509120
• Sum of proper divisors (its aliquot sum) s(n): 94387392
• 42121728 is an abundant number, because the sum of its proper divisors (94387392) is greater than itself. Its abundance is 52265664

Bases of 42121728

• Binary: 10100000101011101000000000₂
• Hexadecimal: 0x282BA00
• Base-36: P2TC0

Squares and roots of 42121728

• 42121728 squared (42121728²) is 1774239969705984
• 42121728 cubed (42121728³) is 74734053410683698020352
• The square root of 42121728 is 6490.1254225169
• The cube root of 42121728 is 347.9381578575

Scales and comparisons

• 42,121,728 seconds is equal to 1 year, 17 weeks, 4 days, 12 hours, 28 minutes, 48 seconds.
• To count from 1 to 42,121,728 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 42121728 cubic inches would be around 29 feet tall.

Recreational maths with 42121728

• 42121728 backwards is 82712124
• 42121728 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 42121728's digits is 27
• More coming soon!