135

Number
$135$ (one hundred and thirty-five) is:
 * $3^3 \times 5$


 * The $29$th lucky number:
 * $1, 3, 7, 9, 13, 15, 21, \ldots, 105, 111, 115, 127, 129, 133, 135, \ldots$


 * The $12$th number after $0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 89$ which is the sum of the increasing powers of its digits taken in order:
 * $1^1 + 3^2 + 5^3 = 135$


 * The $6$th of the $17$ positive integers for which the value of the Euler $\phi$ function is $72$:
 * $73, 91, 95, 111, 117, 135, 146, 148, 152, 182, 190, 216, 222, 228, 234, 252, 270$