821,142 in words
821,142
eight hundred twenty-one thousand one hundred forty-two
821,142 is written eight hundred twenty-one thousand one hundred forty-two.
Ways to write it
- As an ordinal
- eight hundred twenty-one thousand one hundred forty-second
- Expanded form
- 800,000 + 20,000 + 1,000 + 100 + 40 + 2
Place value
| Place | Digit | Value |
|---|---|---|
| hundred thousands | 8 | 800,000 |
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 1 | 100 |
| tens | 4 | 40 |
| ones | 2 | 2 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 60 factors: too many to list
- First 10 multiples
- 821,142, 1,642,284, 2,463,426, 3,284,568, 4,105,710, 4,926,852, 5,747,994, 6,569,136, 7,390,278, 8,211,420
- Square
- 821,142 × 821,142 = 674,274,184,164
- Square root
- ≈ 906.17
- Sum of the digits
- 8 + 2 + 1 + 1 + 4 + 2 = 18
- Rounded to the nearest 10
- 821,140
- Rounded to the nearest 100
- 821,100
- Rounded to the nearest 1000
- 821,000
- Number before
- 821,141
- Number after
- 821,143
- In binary
11001000011110010110
Quick check
What number comes just after 821,142?
Show the answer
821,143
Is 821,142 even or odd?
Show the answer
Even
What is 821,142 + 10?
Show the answer
821,152
Practise 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 821,142 in words?
821,142 is written "eight hundred twenty-one thousand one hundred forty-two".
Is 821,142 a prime number?
No. 821,142 is a composite number, because it has more than two factors.