84,021 in words
84,021
eighty-four thousand twenty-one
84,021 is written eighty-four thousand twenty-one.
Ways to write it
- As an ordinal
- eighty-four thousand twenty-first
- Expanded form
- 80,000 + 4,000 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 8 | 80,000 |
| thousands | 4 | 4,000 |
| hundreds | 0 | 0 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 3, 7, 21, 4,001, 12,003, 28,007 and 84,021 (8 factors)
- First 10 multiples
- 84,021, 168,042, 252,063, 336,084, 420,105, 504,126, 588,147, 672,168, 756,189, 840,210
- Square
- 84,021 × 84,021 = 7,059,528,441
- Square root
- ≈ 289.86
- Sum of the digits
- 8 + 4 + 0 + 2 + 1 = 15
- Rounded to the nearest 10
- 84,020
- Rounded to the nearest 100
- 84,000
- Rounded to the nearest 1000
- 84,000
- Number before
- 84,020
- Number after
- 84,022
- In binary
10100100000110101
Quick check
What number comes just after 84,021?
Show the answer
84,022
Is 84,021 even or odd?
Show the answer
Odd
What is 84,021 + 10?
Show the answer
84,031
Practice 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 84,021 in words?
84,021 is written "eighty-four thousand twenty-one".
Is 84,021 a prime number?
No. 84,021 is a composite number, because it has more than two factors.
What are the factors of 84,021?
The factors of 84,021 are 1, 3, 7, 21, 4,001, 12,003, 28,007 and 84,021.