842,421 in words
842,421
eight hundred and forty-two thousand four hundred and twenty-one
842,421 is written eight hundred and forty-two thousand four hundred and twenty-one.
Ways to write it
- As an ordinal
- eight hundred and forty-two thousand four hundred and twenty-first
- Expanded form
- 800,000 + 40,000 + 2,000 + 400 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| hundred thousands | 8 | 800,000 |
| ten thousands | 4 | 40,000 |
| thousands | 2 | 2,000 |
| hundreds | 4 | 400 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 3, 23, 29, 69, 87, 421, 667, 1,263, 2,001, 9,683, 12,209, 29,049, 36,627, 280,807 and 842,421 (16 factors)
- First 10 multiples
- 842,421, 1,684,842, 2,527,263, 3,369,684, 4,212,105, 5,054,526, 5,896,947, 6,739,368, 7,581,789, 8,424,210
- Square
- 842,421 × 842,421 = 709,673,141,241
- Square root
- ≈ 917.83
- Sum of the digits
- 8 + 4 + 2 + 4 + 2 + 1 = 21
- Rounded to the nearest 10
- 842,420
- Rounded to the nearest 100
- 842,400
- Rounded to the nearest 1000
- 842,000
- Number before
- 842,420
- Number after
- 842,422
- In binary
11001101101010110101
Quick check
What number comes just after 842,421?
Show the answer
842,422
Is 842,421 even or odd?
Show the answer
Odd
What is 842,421 + 10?
Show the answer
842,431
Practise with a game
Factors, Multiples & Primes
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Number Patterns
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How do you write 842,421 in words?
842,421 is written "eight hundred and forty-two thousand four hundred and twenty-one".
Is 842,421 a prime number?
No. 842,421 is a composite number, because it has more than two factors.
What are the factors of 842,421?
The factors of 842,421 are 1, 3, 23, 29, 69, 87, 421, 667, 1,263, 2,001, 9,683, 12,209, 29,049, 36,627, 280,807 and 842,421.