CDXLII is the Roman numeral representation for the number 442. In the Roman numeral system, "CD" stands for 400, "XL" represents 40, and "II" signifies 2. When combined, these components add up to 442. Roman numerals, such as CDXLII, were commonly used in ancient Rome for various purposes, including numbering years, chapters, and pages. This numeral system employs combinations of letters from the Latin alphabet, specifically I, V, X, L, C, D, and M, to signify different values.