118

Number
$118$ (one hundred and eighteen) is:


 * $2 \times 59$


 * The $37$th semiprime:
 * $118 = 2 \times 59$


 * The $15$th nontotient after $14$, $26$, $34$, $38$, $50$, $62$, $68$, $74$, $76$, $86$, $90$, $94$, $98$, $114$:
 * $\nexists m \in \Z_{>0}: \map \phi m = 118$
 * where $\map \phi m$ denotes the Euler $\phi$ function


 * The $4$th term of the $2$nd $5$-tuple of consecutive integers have the property that they are not values of the divisor sum function $\map {\sigma_1} n$ for any $n$:
 * $\tuple {115, 116, 117, 118, 119}$


 * The smallest positive integer which is the sum of $4$ distinct ordered triples, each of which has the same product:
 * $118 = 14 + 50 + 54 = 15 + 40 + 63 = 18 + 30 + 70 = 21 + 25 + 72$
 * each of which has a product of $37 \, 800$

Also see

 * Smallest Number which is Sum of 4 Triples with Equal Products