842,021 in words
842,021
eight hundred forty-two thousand twenty-one
842,021 is written eight hundred forty-two thousand twenty-one.
Ways to write it
- As an ordinal
- eight hundred forty-two thousand twenty-first
- Expanded form
- 800,000 + 40,000 + 2,000 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| hundred thousands | 8 | 800,000 |
| ten thousands | 4 | 40,000 |
| thousands | 2 | 2,000 |
| hundreds | 0 | 0 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Prime
- Factors
- 1 and 842,021 (2 factors)
- First 10 multiples
- 842,021, 1,684,042, 2,526,063, 3,368,084, 4,210,105, 5,052,126, 5,894,147, 6,736,168, 7,578,189, 8,420,210
- Square
- 842,021 × 842,021 = 708,999,364,441
- Square root
- ≈ 917.62
- Sum of the digits
- 8 + 4 + 2 + 0 + 2 + 1 = 17
- Rounded to the nearest 10
- 842,020
- Rounded to the nearest 100
- 842,000
- Rounded to the nearest 1000
- 842,000
- Number before
- 842,020
- Number after
- 842,022
- In binary
11001101100100100101
Quick check
What number comes just after 842,021?
Show the answer
842,022
Is 842,021 even or odd?
Show the answer
Odd
What is 842,021 + 10?
Show the answer
842,031
Practise with a game
Factors, Multiples & Primes
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Number Patterns
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How do you write 842,021 in words?
842,021 is written "eight hundred forty-two thousand twenty-one".
Is 842,021 a prime number?
Yes. 842,021 is a prime number: its only factors are 1 and 842,021.
What are the factors of 842,021?
The factors of 842,021 are 1 and 842,021.