21,241 in words
21,241
twenty-one thousand two hundred forty-one
21,241 is written twenty-one thousand two hundred forty-one.
Ways to write it
- As an ordinal
- twenty-one thousand two hundred forty-first
- Expanded form
- 20,000 + 1,000 + 200 + 40 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 2 | 200 |
| tens | 4 | 40 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 11, 1,931 and 21,241 (4 factors)
- First 10 multiples
- 21,241, 42,482, 63,723, 84,964, 106,205, 127,446, 148,687, 169,928, 191,169, 212,410
- Square
- 21,241 × 21,241 = 451,180,081
- Square root
- ≈ 145.74
- Sum of the digits
- 2 + 1 + 2 + 4 + 1 = 10
- Rounded to the nearest 10
- 21,240
- Rounded to the nearest 100
- 21,200
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,240
- Number after
- 21,242
- In binary
101001011111001
Quick check
What number comes just after 21,241?
Show the answer
21,242
Is 21,241 even or odd?
Show the answer
Odd
What is 21,241 + 10?
Show the answer
21,251
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 21,241 in words?
21,241 is written "twenty-one thousand two hundred forty-one".
Is 21,241 a prime number?
No. 21,241 is a composite number, because it has more than two factors.
What are the factors of 21,241?
The factors of 21,241 are 1, 11, 1,931 and 21,241.