21242999

Names of 21242999

• Cardinal: 21242999 can be written as Twenty-one million, two hundred forty-two thousand, nine hundred ninety-nine.

Scientific notation

• Scientific notation: 2.1242999 × 10⁷

Factors of 21242999

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 21242999

Divisors of 21242999

• Number of divisors d(n): 2
• Complete list of divisors:
  1 21242999
• Sum of all divisors σ(n): 21243000
• Sum of proper divisors (its aliquot sum) s(n): 1
• 21242999 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 21242998

Bases of 21242999

• Binary: 1010001000010010001110111₂
• Hexadecimal: 0x1442477
• Base-36: CNB7B

Squares and roots of 21242999

• 21242999 squared (21242999²) is 451265006514001
• 21242999 cubed (21242999³) is 9586222082111916728999
• The square root of 21242999 is 4609.0128010237
• The cube root of 21242999 is 276.9524913417

Scales and comparisons

• 21,242,999 seconds is equal to 35 weeks, 20 hours, 49 minutes, 59 seconds.
• To count from 1 to 21,242,999 would take you about four days!

  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 21242999 cubic inches would be around 23.1 feet tall.

Recreational maths with 21242999

• 21242999 backwards is 99924212
• The number of decimal digits it has is: 8
• The sum of 21242999's digits is 38
• More coming soon!