342,821 in words
342,821
three hundred and forty-two thousand eight hundred and twenty-one
342,821 is written three hundred and forty-two thousand eight hundred and twenty-one.
Ways to write it
- As an ordinal
- three hundred and forty-two thousand eight hundred and twenty-first
- Expanded form
- 300,000 + 40,000 + 2,000 + 800 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| hundred thousands | 3 | 300,000 |
| ten thousands | 4 | 40,000 |
| thousands | 2 | 2,000 |
| hundreds | 8 | 800 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Prime
- Factors
- 1 and 342,821 (2 factors)
- First 10 multiples
- 342,821, 685,642, 1,028,463, 1,371,284, 1,714,105, 2,056,926, 2,399,747, 2,742,568, 3,085,389, 3,428,210
- Square
- 342,821 × 342,821 = 117,526,238,041
- Square root
- ≈ 585.51
- Sum of the digits
- 3 + 4 + 2 + 8 + 2 + 1 = 20
- Rounded to the nearest 10
- 342,820
- Rounded to the nearest 100
- 342,800
- Rounded to the nearest 1000
- 343,000
- Number before
- 342,820
- Number after
- 342,822
- In binary
1010011101100100101
Quick check
What number comes just after 342,821?
Show the answer
342,822
Is 342,821 even or odd?
Show the answer
Odd
What is 342,821 + 10?
Show the answer
342,831
Practise with a game
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.
Number Patterns
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How do you write 342,821 in words?
342,821 is written "three hundred and forty-two thousand eight hundred and twenty-one".
Is 342,821 a prime number?
Yes. 342,821 is a prime number: its only factors are 1 and 342,821.
What are the factors of 342,821?
The factors of 342,821 are 1 and 342,821.