23,421 in words
23,421
twenty-three thousand four hundred and twenty-one
23,421 is written twenty-three thousand four hundred and twenty-one.
Ways to write it
- As an ordinal
- twenty-three thousand four hundred and twenty-first
- Expanded form
- 20,000 + 3,000 + 400 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 3 | 3,000 |
| hundreds | 4 | 400 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 3, 37, 111, 211, 633, 7,807 and 23,421 (8 factors)
- First 10 multiples
- 23,421, 46,842, 70,263, 93,684, 117,105, 140,526, 163,947, 187,368, 210,789, 234,210
- Square
- 23,421 × 23,421 = 548,543,241
- Square root
- ≈ 153.04
- Sum of the digits
- 2 + 3 + 4 + 2 + 1 = 12
- Rounded to the nearest 10
- 23,420
- Rounded to the nearest 100
- 23,400
- Rounded to the nearest 1000
- 23,000
- Number before
- 23,420
- Number after
- 23,422
- In binary
101101101111101
Quick check
What number comes just after 23,421?
Show the answer
23,422
Is 23,421 even or odd?
Show the answer
Odd
What is 23,421 + 10?
Show the answer
23,431
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 23,421 in words?
23,421 is written "twenty-three thousand four hundred and twenty-one".
Is 23,421 a prime number?
No. 23,421 is a composite number, because it has more than two factors.
What are the factors of 23,421?
The factors of 23,421 are 1, 3, 37, 111, 211, 633, 7,807 and 23,421.