123,455,554,321

Number
$123 \, 455 \, 554 \, 321$ is:


 * $11 \times 41 \times 73 \times 101 \times 137 \times 271$


 * A palindromic Smith number:
 * $1 + 2 + 3 + 4 + 5 + 5 + 5 + 5 + 4 + 3 + 2 + 1 = 40 = 1 + 1 + 4 + 1 + 7 + 3 + 1 + 0 + 1 + 1 + 3 + 7 + 2 + 7 + 1$