17,421 in words
17,421
seventeen thousand four hundred and twenty-one
17,421 is written seventeen thousand four hundred and twenty-one.
Ways to write it
- As an ordinal
- seventeen thousand four hundred and twenty-first
- Expanded form
- 10,000 + 7,000 + 400 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 1 | 10,000 |
| thousands | 7 | 7,000 |
| hundreds | 4 | 400 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 3, 5,807 and 17,421 (4 factors)
- First 10 multiples
- 17,421, 34,842, 52,263, 69,684, 87,105, 104,526, 121,947, 139,368, 156,789, 174,210
- Square
- 17,421 × 17,421 = 303,491,241
- Square root
- ≈ 131.99
- Sum of the digits
- 1 + 7 + 4 + 2 + 1 = 15
- Rounded to the nearest 10
- 17,420
- Rounded to the nearest 100
- 17,400
- Rounded to the nearest 1000
- 17,000
- Number before
- 17,420
- Number after
- 17,422
- In binary
100010000001101
Quick check
What number comes just after 17,421?
Show the answer
17,422
Is 17,421 even or odd?
Show the answer
Odd
What is 17,421 + 10?
Show the answer
17,431
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 17,421 in words?
17,421 is written "seventeen thousand four hundred and twenty-one".
Is 17,421 a prime number?
No. 17,421 is a composite number, because it has more than two factors.
What are the factors of 17,421?
The factors of 17,421 are 1, 3, 5,807 and 17,421.