21,141 in words
21,141
twenty-one thousand one hundred forty-one
21,141 is written twenty-one thousand one hundred forty-one.
Ways to write it
- As an ordinal
- twenty-one thousand one hundred forty-first
- Expanded form
- 20,000 + 1,000 + 100 + 40 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 1 | 100 |
| tens | 4 | 40 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 3, 9, 27, 29, 81, 87, 243, 261, 729, 783, 2,349, 7,047 and 21,141 (14 factors)
- First 10 multiples
- 21,141, 42,282, 63,423, 84,564, 105,705, 126,846, 147,987, 169,128, 190,269, 211,410
- Square
- 21,141 × 21,141 = 446,941,881
- Square root
- ≈ 145.40
- Sum of the digits
- 2 + 1 + 1 + 4 + 1 = 9
- Rounded to the nearest 10
- 21,140
- Rounded to the nearest 100
- 21,100
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,140
- Number after
- 21,142
- In binary
101001010010101
Quick check
What number comes just after 21,141?
Show the answer
21,142
Is 21,141 even or odd?
Show the answer
Odd
What is 21,141 + 10?
Show the answer
21,151
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 21,141 in words?
21,141 is written "twenty-one thousand one hundred forty-one".
Is 21,141 a prime number?
No. 21,141 is a composite number, because it has more than two factors.
What are the factors of 21,141?
The factors of 21,141 are 1, 3, 9, 27, 29, 81, 87, 243, 261, 729, 783, 2,349, 7,047 and 21,141.