21,046 in words
21,046
twenty-one thousand forty-six
21,046 is written twenty-one thousand forty-six.
Ways to write it
- As an ordinal
- twenty-one thousand forty-sixth
- Expanded form
- 20,000 + 1,000 + 40 + 6
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 0 | 0 |
| tens | 4 | 40 |
| ones | 6 | 6 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 17, 34, 619, 1,238, 10,523 and 21,046 (8 factors)
- First 10 multiples
- 21,046, 42,092, 63,138, 84,184, 105,230, 126,276, 147,322, 168,368, 189,414, 210,460
- Square
- 21,046 × 21,046 = 442,934,116
- Square root
- ≈ 145.07
- Sum of the digits
- 2 + 1 + 0 + 4 + 6 = 13
- Rounded to the nearest 10
- 21,050
- Rounded to the nearest 100
- 21,000
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,045
- Number after
- 21,047
- In binary
101001000110110
Quick check
What number comes just after 21,046?
Show the answer
21,047
Is 21,046 even or odd?
Show the answer
Even
What is 21,046 + 10?
Show the answer
21,056
Practice 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 21,046 in words?
21,046 is written "twenty-one thousand forty-six".
Is 21,046 a prime number?
No. 21,046 is a composite number, because it has more than two factors.
What are the factors of 21,046?
The factors of 21,046 are 1, 2, 17, 34, 619, 1,238, 10,523 and 21,046.