102

Number
$102$ (one hundred and two) is:


 * $2 \times 3 \times 17$


 * The $3$rd positive integer after $1$, $7$ the sum of whose divisors is a cube:
 * $\map \sigma {102} = 216 = 6^3$
 * It is also the $2$nd of those positive integer after $1$ the divisor count is also a cube:
 * $\map {\sigma_0} {102} = 8 = 2^3$


 * The $6$th sphenic number after $30$, $42$, $66$, $70$, $78$:
 * $102 = 2 \times 3 \times 17$


 * The smallest positive integer whose $7$th power can be expressed as the sum of $8$ other $7$th powers:
 * $102^7 = 12^7 + 35^7 + 53^7 + 58^7 + 64^7 + 83^7 + 85^7 + 90^7$


 * The $51$st positive integer after $2$, $3$, $4$, $7$, $8$, $\ldots$, $61$, $65$, $66$, $67$, $72$, $77$, $80$, $81$, $84$, $89$, $94$, $95$, $96$, $100$, $101$ which cannot be expressed as the sum of distinct pentagonal numbers.

Also see

 * Smallest Seventh Power which is Sum of 8 other Seventh Powers