42

Number
$42$ (forty-two) is:


 * $2 \times 3 \times 7$


 * The $8$th abundant number after $12, 18, 20, 24, 30, 36, 40$:
 * $1 + 2 + 3 + 6 + 7 + 14 + 21 = 54 > 42$


 * The $10$th semiperfect number after $6, 12, 18, 20, 24, 28, 30, 36, 40$:
 * $42 = 7 + 14 + 21$