42969721

Names of 42969721

• Cardinal: 42969721 can be written as Forty-two million, nine hundred sixty-nine thousand, seven hundred twenty-one.

Scientific notation

• Scientific notation: 4.2969721 × 10⁷

Factors of 42969721

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 42969721

Divisors of 42969721

• Number of divisors d(n): 2
• Complete list of divisors:
  1 42969721
• Sum of all divisors σ(n): 42969722
• Sum of proper divisors (its aliquot sum) s(n): 1
• 42969721 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 42969720

Bases of 42969721

• Binary: 10100011111010101001111001₂
• Hexadecimal: 0x28FAA79
• Base-36: PKZND

Squares and roots of 42969721

• 42969721 squared (42969721²) is 1846396922817841
• 42969721 cubed (42969721³) is 79339160628741161592361
• The square root of 42969721 is 6555.1293656189
• The cube root of 42969721 is 350.2575546443

Scales and comparisons

• 42,969,721 seconds is equal to 1 year, 19 weeks, 8 hours, 2 minutes, 1 second.
• To count from 1 to 42,969,721 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 42969721 cubic inches would be around 29.2 feet tall.

Recreational maths with 42969721

• 42969721 backwards is 12796924
• The number of decimal digits it has is: 8
• The sum of 42969721's digits is 40
• More coming soon!