1,642 in words
1,642
one thousand six hundred and forty-two
1,642 is written one thousand six hundred and forty-two.
Ways to write it
- As an ordinal
- one thousand six hundred and forty-second
- Roman numeral
- MDCXLII
- Expanded form
- 1,000 + 600 + 40 + 2
Place value
| Place | Digit | Value |
|---|---|---|
| thousands | 1 | 1,000 |
| hundreds | 6 | 600 |
| tens | 4 | 40 |
| ones | 2 | 2 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 821 and 1,642 (4 factors)
- First 10 multiples
- 1,642, 3,284, 4,926, 6,568, 8,210, 9,852, 11,494, 13,136, 14,778, 16,420
- Square
- 1,642 × 1,642 = 2,696,164
- Square root
- ≈ 40.52
- Sum of the digits
- 1 + 6 + 4 + 2 = 13
- Rounded to the nearest 10
- 1,640
- Rounded to the nearest 100
- 1,600
- Rounded to the nearest 1000
- 2,000
- Number before
- 1,641
- Number after
- 1,643
- In binary
11001101010
Quick check
What number comes just after 1,642?
Show the answer
1,643
Is 1,642 even or odd?
Show the answer
Even
What is 1,642 + 10?
Show the answer
1,652
Practise with a game
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.
Roman Numerals
Read and write Roman numerals from I to 3,999.Frequently asked questions
How do you write 1,642 in words?
1,642 is written "one thousand six hundred and forty-two".
Is 1,642 a prime number?
No. 1,642 is a composite number, because it has more than two factors.
What are the factors of 1,642?
The factors of 1,642 are 1, 2, 821 and 1,642.
How do you write 1,642 in Roman numerals?
1,642 in Roman numerals is MDCXLII.