21216042

21,216,042 is an even composite number composed of three prime numbers multiplied together.

What does the number 21216042 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 12 divisors.

21216042 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.

Prime factorization of 21216042:

2 × 3² × 1178669

(2 × 3 × 3 × 1178669)

See below for interesting mathematical facts about the number 21216042 from the Numbermatics database.

Names of 21216042

Cardinal: 21216042 can be written as Twenty-one million, two hundred sixteen thousand and forty-two.

Scientific notation

Scientific notation: 2.1216042 × 10⁷

Factors of 21216042

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 4
Sum of prime factors: 1178674

Divisors of 21216042

Number of divisors d(n): 12
Complete list of divisors:
1 2 3 6 9 18 1178669 2357338 3536007 7072014 10608021 21216042
Sum of all divisors σ(n): 45968130
Sum of proper divisors (its aliquot sum) s(n): 24752088
21216042 is an abundant number, because the sum of its proper divisors (24752088) is greater than itself. Its abundance is 3536046

Bases of 21216042

Binary: 1010000111011101100101010₂
Hexadecimal: 0x143BB2A
Base-36: CMQEI

Squares and roots of 21216042

21216042 squared (21216042²) is 450120438145764
21216042 cubed (21216042³) is 9549774120758931146088
The square root of 21216042 is 4606.0874937413
The cube root of 21216042 is 276.8352924389

Scales and comparisons

How big is 21216042?

21,216,042 seconds is equal to 35 weeks, 13 hours, 20 minutes, 42 seconds.
To count from 1 to 21,216,042 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 21216042 cubic inches would be around 23.1 feet tall.

Recreational maths with 21216042

21216042 backwards is 24061212
21216042 is a Harshad number.
The number of decimal digits it has is: 8
The sum of 21216042's digits is 18
More coming soon!

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The information we have on file for 21216042 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!

Keywords: Divisors of 21216042, math, Factors of 21216042, curriculum, school, college, exams, university, Prime factorization of 21216042, STEM, science, technology, engineering, physics, economics, calculator, twenty-one million, two hundred sixteen thousand and forty-two.