CXLIII is the Roman numeral representation for the number 143. In the Roman numeral system, "C" stands for 100, "XL" represents 40, and "III" signifies 3. When combined, these values add up to 143. Roman numerals are often used in various contexts, such as clock faces, book chapters, and historical events. The number 143 is also commonly associated with the phrase "I love you," as it represents the number of letters in each word. This numerical code is often used in text messages and social media to express affection in a concise manner.