40,421 in words
40,421
forty thousand four hundred and twenty-one
40,421 is written forty thousand four hundred and twenty-one.
Ways to write it
- As an ordinal
- forty thousand four hundred and twenty-first
- Expanded form
- 40,000 + 400 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 4 | 40,000 |
| thousands | 0 | 0 |
| hundreds | 4 | 400 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 83, 487 and 40,421 (4 factors)
- First 10 multiples
- 40,421, 80,842, 121,263, 161,684, 202,105, 242,526, 282,947, 323,368, 363,789, 404,210
- Square
- 40,421 × 40,421 = 1,633,857,241
- Square root
- ≈ 201.05
- Sum of the digits
- 4 + 0 + 4 + 2 + 1 = 11
- Rounded to the nearest 10
- 40,420
- Rounded to the nearest 100
- 40,400
- Rounded to the nearest 1000
- 40,000
- Number before
- 40,420
- Number after
- 40,422
- In binary
1001110111100101
Quick check
What number comes just after 40,421?
Show the answer
40,422
Is 40,421 even or odd?
Show the answer
Odd
What is 40,421 + 10?
Show the answer
40,431
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 40,421 in words?
40,421 is written "forty thousand four hundred and twenty-one".
Is 40,421 a prime number?
No. 40,421 is a composite number, because it has more than two factors.
What are the factors of 40,421?
The factors of 40,421 are 1, 83, 487 and 40,421.