21,434 in words
21,434
twenty-one thousand four hundred thirty-four
21,434 is written twenty-one thousand four hundred thirty-four.
Ways to write it
- As an ordinal
- twenty-one thousand four hundred thirty-fourth
- Expanded form
- 20,000 + 1,000 + 400 + 30 + 4
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 4 | 400 |
| tens | 3 | 30 |
| ones | 4 | 4 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 7, 14, 1,531, 3,062, 10,717 and 21,434 (8 factors)
- First 10 multiples
- 21,434, 42,868, 64,302, 85,736, 107,170, 128,604, 150,038, 171,472, 192,906, 214,340
- Square
- 21,434 × 21,434 = 459,416,356
- Square root
- ≈ 146.40
- Sum of the digits
- 2 + 1 + 4 + 3 + 4 = 14
- Rounded to the nearest 10
- 21,430
- Rounded to the nearest 100
- 21,400
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,433
- Number after
- 21,435
- In binary
101001110111010
Quick check
What number comes just after 21,434?
Show the answer
21,435
Is 21,434 even or odd?
Show the answer
Even
What is 21,434 + 10?
Show the answer
21,444
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 21,434 in words?
21,434 is written "twenty-one thousand four hundred thirty-four".
Is 21,434 a prime number?
No. 21,434 is a composite number, because it has more than two factors.
What are the factors of 21,434?
The factors of 21,434 are 1, 2, 7, 14, 1,531, 3,062, 10,717 and 21,434.