87,121 in words
87,121
eighty-seven thousand one hundred and twenty-one
87,121 is written eighty-seven thousand one hundred and twenty-one.
Ways to write it
- As an ordinal
- eighty-seven thousand one hundred and twenty-first
- Expanded form
- 80,000 + 7,000 + 100 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 8 | 80,000 |
| thousands | 7 | 7,000 |
| hundreds | 1 | 100 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Prime
- Factors
- 1 and 87,121 (2 factors)
- First 10 multiples
- 87,121, 174,242, 261,363, 348,484, 435,605, 522,726, 609,847, 696,968, 784,089, 871,210
- Square
- 87,121 × 87,121 = 7,590,068,641
- Square root
- ≈ 295.16
- Sum of the digits
- 8 + 7 + 1 + 2 + 1 = 19
- Rounded to the nearest 10
- 87,120
- Rounded to the nearest 100
- 87,100
- Rounded to the nearest 1000
- 87,000
- Number before
- 87,120
- Number after
- 87,122
- In binary
10101010001010001
Quick check
What number comes just after 87,121?
Show the answer
87,122
Is 87,121 even or odd?
Show the answer
Odd
What is 87,121 + 10?
Show the answer
87,131
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 87,121 in words?
87,121 is written "eighty-seven thousand one hundred and twenty-one".
Is 87,121 a prime number?
Yes. 87,121 is a prime number: its only factors are 1 and 87,121.
What are the factors of 87,121?
The factors of 87,121 are 1 and 87,121.