42,831 in words
42,831
forty-two thousand eight hundred and thirty-one
42,831 is written forty-two thousand eight hundred and thirty-one.
Ways to write it
- As an ordinal
- forty-two thousand eight hundred and thirty-first
- Expanded form
- 40,000 + 2,000 + 800 + 30 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 4 | 40,000 |
| thousands | 2 | 2,000 |
| hundreds | 8 | 800 |
| tens | 3 | 30 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 3, 9, 4,759, 14,277 and 42,831 (6 factors)
- First 10 multiples
- 42,831, 85,662, 128,493, 171,324, 214,155, 256,986, 299,817, 342,648, 385,479, 428,310
- Square
- 42,831 × 42,831 = 1,834,494,561
- Square root
- ≈ 206.96
- Sum of the digits
- 4 + 2 + 8 + 3 + 1 = 18
- Rounded to the nearest 10
- 42,830
- Rounded to the nearest 100
- 42,800
- Rounded to the nearest 1000
- 43,000
- Number before
- 42,830
- Number after
- 42,832
- In binary
1010011101001111
Quick check
What number comes just after 42,831?
Show the answer
42,832
Is 42,831 even or odd?
Show the answer
Odd
What is 42,831 + 10?
Show the answer
42,841
Practise with a game
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.
Number Patterns
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How do you write 42,831 in words?
42,831 is written "forty-two thousand eight hundred and thirty-one".
Is 42,831 a prime number?
No. 42,831 is a composite number, because it has more than two factors.
What are the factors of 42,831?
The factors of 42,831 are 1, 3, 9, 4,759, 14,277 and 42,831.