42395821

Names of 42395821

• Cardinal: 42395821 can be written as Forty-two million, three hundred ninety-five thousand, eight hundred twenty-one.

Scientific notation

• Scientific notation: 4.2395821 × 10⁷

Factors of 42395821

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 4708

Divisors of 42395821

• Number of divisors d(n): 16
• Complete list of divisors:
  1 13 19 37 247 481 703 4639 9139 60307 88141 171643 1145833 2231359 3261217 42395821
• Sum of all divisors σ(n): 49369600
• Sum of proper divisors (its aliquot sum) s(n): 6973779
• 42395821 is a deficient number, because the sum of its proper divisors (6973779) is less than itself. Its deficiency is 35422042

Bases of 42395821

• Binary: 10100001101110100010101101₂
• Hexadecimal: 0x286E8AD
• Base-36: P8OTP

Squares and roots of 42395821

• 42395821 squared (42395821²) is 1797405638264041
• 42395821 cubed (42395821³) is 76202487704233032972661
• The square root of 42395821 is 6511.2073381209
• The cube root of 42395821 is 348.6912236777

Scales and comparisons

• 42,395,821 seconds is equal to 1 year, 18 weeks, 16 hours, 37 minutes, 1 second.
• To count from 1 to 42,395,821 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 42395821 cubic inches would be around 29.1 feet tall.

Recreational maths with 42395821

• 42395821 backwards is 12859324
• The number of decimal digits it has is: 8
• The sum of 42395821's digits is 34
• More coming soon!