421,998 in words
421,998
four hundred twenty-one thousand nine hundred ninety-eight
421,998 is written four hundred twenty-one thousand nine hundred ninety-eight.
Ways to write it
- As an ordinal
- four hundred twenty-one thousand nine hundred ninety-eighth
- Expanded form
- 400,000 + 20,000 + 1,000 + 900 + 90 + 8
Place value
| Place | Digit | Value |
|---|---|---|
| hundred thousands | 4 | 400,000 |
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 9 | 900 |
| tens | 9 | 90 |
| ones | 8 | 8 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 3, 6, 61, 122, 183, 366, 1,153, 2,306, 3,459, 6,918, 70,333, 140,666, 210,999 and 421,998 (16 factors)
- First 10 multiples
- 421,998, 843,996, 1,265,994, 1,687,992, 2,109,990, 2,531,988, 2,953,986, 3,375,984, 3,797,982, 4,219,980
- Square
- 421,998 × 421,998 = 178,082,312,004
- Square root
- ≈ 649.61
- Sum of the digits
- 4 + 2 + 1 + 9 + 9 + 8 = 33
- Rounded to the nearest 10
- 422,000
- Rounded to the nearest 100
- 422,000
- Rounded to the nearest 1000
- 422,000
- Number before
- 421,997
- Number after
- 421,999
- In binary
1100111000001101110
Quick check
What number comes just after 421,998?
Show the answer
421,999
Is 421,998 even or odd?
Show the answer
Even
What is 421,998 + 10?
Show the answer
422,008
Practice 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 421,998 in words?
421,998 is written "four hundred twenty-one thousand nine hundred ninety-eight".
Is 421,998 a prime number?
No. 421,998 is a composite number, because it has more than two factors.
What are the factors of 421,998?
The factors of 421,998 are 1, 2, 3, 6, 61, 122, 183, 366, 1,153, 2,306, 3,459, 6,918, 70,333, 140,666, 210,999 and 421,998.