42,921 in words
42,921
forty-two thousand nine hundred and twenty-one
42,921 is written forty-two thousand nine hundred and twenty-one.
Ways to write it
- As an ordinal
- forty-two thousand nine hundred and twenty-first
- Expanded form
- 40,000 + 2,000 + 900 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 4 | 40,000 |
| thousands | 2 | 2,000 |
| hundreds | 9 | 900 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 3, 9, 19, 57, 171, 251, 753, 2,259, 4,769, 14,307 and 42,921 (12 factors)
- First 10 multiples
- 42,921, 85,842, 128,763, 171,684, 214,605, 257,526, 300,447, 343,368, 386,289, 429,210
- Square
- 42,921 × 42,921 = 1,842,212,241
- Square root
- ≈ 207.17
- Sum of the digits
- 4 + 2 + 9 + 2 + 1 = 18
- Rounded to the nearest 10
- 42,920
- Rounded to the nearest 100
- 42,900
- Rounded to the nearest 1000
- 43,000
- Number before
- 42,920
- Number after
- 42,922
- In binary
1010011110101001
Quick check
What number comes just after 42,921?
Show the answer
42,922
Is 42,921 even or odd?
Show the answer
Odd
What is 42,921 + 10?
Show the answer
42,931
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 42,921 in words?
42,921 is written "forty-two thousand nine hundred and twenty-one".
Is 42,921 a prime number?
No. 42,921 is a composite number, because it has more than two factors.
What are the factors of 42,921?
The factors of 42,921 are 1, 3, 9, 19, 57, 171, 251, 753, 2,259, 4,769, 14,307 and 42,921.