123108656 has 40 divisors (see below), whose sum is σ = 266274624. Its totient is φ = 54653760.

The previous prime is 123108647. The next prime is 123108737. The reversal of 123108656 is 656801321.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 566 + ... + 15701.

Almost surely, 2^123108656 is an apocalyptic number.

123108656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123108656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133137312).

123108656 is an abundant number, since it is smaller than the sum of its proper divisors (143165968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123108656 is a wasteful number, since it uses less digits than its factorization.

123108656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16329 (or 16323 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 123108656 is about 11095.4340158463. The cubic root of 123108656 is about 497.4653811252.

Adding to 123108656 its reverse (656801321), we get a palindrome (779909977).

The spelling of 123108656 in words is "one hundred twenty-three million, one hundred eight thousand, six hundred fifty-six".