72,021 in words
72,021
seventy-two thousand twenty-one
72,021 is written seventy-two thousand twenty-one.
Ways to write it
- As an ordinal
- seventy-two thousand twenty-first
- Expanded form
- 70,000 + 2,000 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 7 | 70,000 |
| thousands | 2 | 2,000 |
| hundreds | 0 | 0 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 3, 24,007 and 72,021 (4 factors)
- First 10 multiples
- 72,021, 144,042, 216,063, 288,084, 360,105, 432,126, 504,147, 576,168, 648,189, 720,210
- Square
- 72,021 × 72,021 = 5,187,024,441
- Square root
- ≈ 268.37
- Sum of the digits
- 7 + 2 + 0 + 2 + 1 = 12
- Rounded to the nearest 10
- 72,020
- Rounded to the nearest 100
- 72,000
- Rounded to the nearest 1000
- 72,000
- Number before
- 72,020
- Number after
- 72,022
- In binary
10001100101010101
Quick check
What number comes just after 72,021?
Show the answer
72,022
Is 72,021 even or odd?
Show the answer
Odd
What is 72,021 + 10?
Show the answer
72,031
Practise with a game
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.
Number Patterns
Find the missing number in a sequence.Frequently asked questions
How do you write 72,021 in words?
72,021 is written "seventy-two thousand twenty-one".
Is 72,021 a prime number?
No. 72,021 is a composite number, because it has more than two factors.
What are the factors of 72,021?
The factors of 72,021 are 1, 3, 24,007 and 72,021.