42,491 in words
42,491
forty-two thousand four hundred and ninety-one
42,491 is written forty-two thousand four hundred and ninety-one.
Ways to write it
- As an ordinal
- forty-two thousand four hundred and ninety-first
- Expanded form
- 40,000 + 2,000 + 400 + 90 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 4 | 40,000 |
| thousands | 2 | 2,000 |
| hundreds | 4 | 400 |
| tens | 9 | 90 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Prime
- Factors
- 1 and 42,491 (2 factors)
- First 10 multiples
- 42,491, 84,982, 127,473, 169,964, 212,455, 254,946, 297,437, 339,928, 382,419, 424,910
- Square
- 42,491 × 42,491 = 1,805,485,081
- Square root
- ≈ 206.13
- Sum of the digits
- 4 + 2 + 4 + 9 + 1 = 20
- Rounded to the nearest 10
- 42,490
- Rounded to the nearest 100
- 42,500
- Rounded to the nearest 1000
- 42,000
- Number before
- 42,490
- Number after
- 42,492
- In binary
1010010111111011
Quick check
What number comes just after 42,491?
Show the answer
42,492
Is 42,491 even or odd?
Show the answer
Odd
What is 42,491 + 10?
Show the answer
42,501
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 42,491 in words?
42,491 is written "forty-two thousand four hundred and ninety-one".
Is 42,491 a prime number?
Yes. 42,491 is a prime number: its only factors are 1 and 42,491.
What are the factors of 42,491?
The factors of 42,491 are 1 and 42,491.