Numbers / 142

The Number 142

142 is composite: factorization 2 × 71. That gives 142 exactly 4 divisors: 1, 2, 71, 142. 142's proper divisors total just 74, 68 short of 142, the deficient case most of 142's neighbors share too. 142 has a digit sum of 7; for 142, the digital root works out to 7. 142: 2 all divide 142 evenly, out of 2-12. 142 is 10001110 in binary and 8E in hex; as a Roman numeral it's CXLII.