142

Number
$142$ (one hundred and forty-two) is:


 * $2 \times 71$


 * The $18$th nontotient after $14, 26, 34, 38, 50, 62, 68, 74, 76, 86, 90, 94, 98, 114, 118, 122, 124, 134$:
 * $\nexists m \in \Z_{>0}: \phi \left({m}\right) = 142$
 * where $\phi \left({m}\right)$ denotes the Euler $\phi$ function


 * The $59$th positive integer after $2, 3, 4, 7, 8, \ldots, 95, 96, 100, 101, 102, 107, 112, 116, 124, 136, 137, 141$ which cannot be expressed as the sum of distinct pentagonal numbers.