# 132

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## Number

$132$ (one hundred and thirty-two) is:

$2^2 \times 3 \times 11$

The $6$th Catalan number after $(1)$, $1$, $2$, $5$, $14$, $42$:
$\dfrac 1 {6 + 1} \dbinom {2 \times 6} 6 = \dfrac 1 7 \times 924 = 132$

The $19$th Zuckerman number after $1$, $2$, $3$, $4$, $5$, $6$, $7$, $8$, $9$, $11$, $12$, $15$, $24$, $36$, $111$, $112$, $115$, $128$:
$132 = 22 \times 6 = 22 \times \left({1 \times 3 \times 2}\right)$

The smallest (positive) integers which is the sum of all the $2$-digit (positive) integers formed from its own digits:
$12 + 13 + 21 + 23 + 31 + 32 = 132$