21,422 in words
21,422
twenty-one thousand four hundred twenty-two
21,422 is written twenty-one thousand four hundred twenty-two.
Ways to write it
- As an ordinal
- twenty-one thousand four hundred twenty-second
- Expanded form
- 20,000 + 1,000 + 400 + 20 + 2
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 4 | 400 |
| tens | 2 | 20 |
| ones | 2 | 2 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 10,711 and 21,422 (4 factors)
- First 10 multiples
- 21,422, 42,844, 64,266, 85,688, 107,110, 128,532, 149,954, 171,376, 192,798, 214,220
- Square
- 21,422 × 21,422 = 458,902,084
- Square root
- ≈ 146.36
- Sum of the digits
- 2 + 1 + 4 + 2 + 2 = 11
- Rounded to the nearest 10
- 21,420
- Rounded to the nearest 100
- 21,400
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,421
- Number after
- 21,423
- In binary
101001110101110
Quick check
What number comes just after 21,422?
Show the answer
21,423
Is 21,422 even or odd?
Show the answer
Even
What is 21,422 + 10?
Show the answer
21,432
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 21,422 in words?
21,422 is written "twenty-one thousand four hundred twenty-two".
Is 21,422 a prime number?
No. 21,422 is a composite number, because it has more than two factors.
What are the factors of 21,422?
The factors of 21,422 are 1, 2, 10,711 and 21,422.