842 in Roman Numerals
842
DCCCX (subtracted)LII
eight hundred forty-two
How DCCCXLII is formed
| Place | Value | Symbols |
|---|---|---|
| Hundreds | 800 | DCCC |
| Tens | 40 | X (subtracted)L |
| Units | 2 | II |
| Total | 842 | DCCCXLII |
DCCCXLII is written one place at a time, from the largest to the smallest: DCCC (800) + XL (40) + II (2) = 842.
XL is the only subtraction: the X before the L takes away 10, so XL = 40.
Common mistakes
Wrong: DCCCXXXXII
Why isn't 842 written as DCCCXXXXII?
A symbol can't be repeated four times in a row. 40 is XL (50 − 10), not XXXX, so 842 is DCCCXLII.
Wrong: CCMXLII
Why isn't 842 written as CCMXLII?
Only one smaller symbol can stand before a larger one, so CCM doesn't work. 800 is DCCC (500 + 300), so 842 is DCCCXLII.
Numbers near 842
Properties of 842
- Prime factors
- 2 × 421
- Divisors
- 1, 2, 421, 842
- Even or odd
- Even
- Prime number
- No
- Letters in DCCCXLII
- 8
842,000 in Roman numerals
With a bar over it (vinculum), D̅C̅C̅C̅X̅L̅I̅I̅ means 842 × 1,000 = 842,000. How Roman numerals work