16,421 is a prime number. Like all primes greater than two, it is odd and has no factors apart from itself and one.

What does the number 16421 look like?

As a prime, it is not composed of any other numbers and has no internal structure.

16421 is a prime number. Like all primes (except two), it is an odd number.

Prime factorization of 16421:


See below for interesting mathematical facts about the number 16421 from the Numbermatics database.

Names of 16421

  • Cardinal: 16421 can be written as Sixteen thousand, four hundred twenty-one.

Scientific notation

  • Scientific notation: 1.6421 × 104

Factors of 16421

  • Number of distinct prime factors ω(n): 1
  • Total number of prime factors Ω(n): 1
  • Sum of prime factors: 16421

Divisors of 16421

  • Number of divisors d(n): 2
  • Complete list of divisors:
  • Sum of all divisors σ(n): 16422
  • Sum of proper divisors (its aliquot sum) s(n): 1
  • 16421 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 16420

Bases of 16421

  • Binary: 1000000001001012
  • Hexadecimal: 0x4025
  • Base-36: CO5

Squares and roots of 16421

  • 16421 squared (164212) is 269649241
  • 16421 cubed (164213) is 4427910186461
  • The square root of 16421 is 128.1444497433
  • The cube root of 16421 is 25.4175215455

Scales and comparisons

How big is 16421?
  • 16,421 seconds is equal to 4 hours, 33 minutes, 41 seconds.
  • To count from 1 to 16,421 would take you about four 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 16421 cubic inches would be around 2.1 feet tall.

Recreational maths with 16421

  • 16421 backwards is 12461
  • The number of decimal digits it has is: 5
  • The sum of 16421's digits is 14
  • More coming soon!

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The information we have on file for 16421 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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