72,421 in words
72,421
seventy-two thousand four hundred and twenty-one
72,421 is written seventy-two thousand four hundred and twenty-one.
Ways to write it
- As an ordinal
- seventy-two thousand four hundred and twenty-first
- Expanded form
- 70,000 + 2,000 + 400 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 7 | 70,000 |
| thousands | 2 | 2,000 |
| hundreds | 4 | 400 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Prime
- Factors
- 1 and 72,421 (2 factors)
- First 10 multiples
- 72,421, 144,842, 217,263, 289,684, 362,105, 434,526, 506,947, 579,368, 651,789, 724,210
- Square
- 72,421 × 72,421 = 5,244,801,241
- Square root
- ≈ 269.11
- Sum of the digits
- 7 + 2 + 4 + 2 + 1 = 16
- Rounded to the nearest 10
- 72,420
- Rounded to the nearest 100
- 72,400
- Rounded to the nearest 1000
- 72,000
- Number before
- 72,420
- Number after
- 72,422
- In binary
10001101011100101
Quick check
What number comes just after 72,421?
Show the answer
72,422
Is 72,421 even or odd?
Show the answer
Odd
What is 72,421 + 10?
Show the answer
72,431
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 72,421 in words?
72,421 is written "seventy-two thousand four hundred and twenty-one".
Is 72,421 a prime number?
Yes. 72,421 is a prime number: its only factors are 1 and 72,421.
What are the factors of 72,421?
The factors of 72,421 are 1 and 72,421.