138

Number
$138$ (one hundred and thirty-eight) is:
 * $2 \times 3 \times 23$


 * The $11$th sphenic number after $30$, $42$, $66$, $70$, $78$, $102$, $105$, $110$, $114$, $130$:
 * $138 = 2 \times 3 \times 23$


 * Its aliquot sequence terminates in $1$ after $177$ steps.

Also see

 * Aliquot Sequence starting from $138$