42,081 in words
42,081
forty-two thousand eighty-one
42,081 is written forty-two thousand eighty-one.
Ways to write it
- As an ordinal
- forty-two thousand eighty-first
- Expanded form
- 40,000 + 2,000 + 80 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 4 | 40,000 |
| thousands | 2 | 2,000 |
| hundreds | 0 | 0 |
| tens | 8 | 80 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 3, 13, 39, 83, 169, 249, 507, 1,079, 3,237, 14,027 and 42,081 (12 factors)
- First 10 multiples
- 42,081, 84,162, 126,243, 168,324, 210,405, 252,486, 294,567, 336,648, 378,729, 420,810
- Square
- 42,081 × 42,081 = 1,770,810,561
- Square root
- ≈ 205.14
- Sum of the digits
- 4 + 2 + 0 + 8 + 1 = 15
- Rounded to the nearest 10
- 42,080
- Rounded to the nearest 100
- 42,100
- Rounded to the nearest 1000
- 42,000
- Number before
- 42,080
- Number after
- 42,082
- In binary
1010010001100001
Quick check
What number comes just after 42,081?
Show the answer
42,082
Is 42,081 even or odd?
Show the answer
Odd
What is 42,081 + 10?
Show the answer
42,091
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 42,081 in words?
42,081 is written "forty-two thousand eighty-one".
Is 42,081 a prime number?
No. 42,081 is a composite number, because it has more than two factors.
What are the factors of 42,081?
The factors of 42,081 are 1, 3, 13, 39, 83, 169, 249, 507, 1,079, 3,237, 14,027 and 42,081.