1842 in Roman Numerals
1842
MDCCCX (subtracted)LII
one thousand eight hundred forty-two
How MDCCCXLII is formed
| Place | Value | Symbols |
|---|---|---|
| Thousands | 1000 | M |
| Hundreds | 800 | DCCC |
| Tens | 40 | X (subtracted)L |
| Units | 2 | II |
| Total | 1842 | MDCCCXLII |
MDCCCXLII is written one place at a time, from the largest to the smallest: M (1000) + DCCC (800) + XL (40) + II (2) = 1842.
XL is the only subtraction: the X before the L takes away 10, so XL = 40.
Common mistakes
Wrong: MDCCCXXXXII
Why isn't 1842 written as MDCCCXXXXII?
A symbol can't be repeated four times in a row. 40 is XL (50 − 10), not XXXX, so 1842 is MDCCCXLII.
Wrong: MCCMXLII
Why isn't 1842 written as MCCMXLII?
Only one smaller symbol can stand before a larger one, so CCM doesn't work. 800 is DCCC (500 + 300), so 1842 is MDCCCXLII.
Numbers near 1842
Properties of 1842
- Prime factors
- 2 × 3 × 307
- Divisors
- 1, 2, 3, 6, 307, 614, 921, 1842
- Even or odd
- Even
- Prime number
- No
- Letters in MDCCCXLII
- 9
1,842,000 in Roman numerals
With a bar over it (vinculum), M̅D̅C̅C̅C̅X̅L̅I̅I̅ means 1842 × 1,000 = 1,842,000. How Roman numerals work