123356406 has 32 divisors (see below), whose sum is σ = 258474240. Its totient is φ = 39173024.

The previous prime is 123356399. The next prime is 123356411. The reversal of 123356406 is 604653321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35461 + ... + 38783.

It is an arithmetic number, because the mean of its divisors is an integer number (8077320).

Almost surely, 2^123356406 is an apocalyptic number.

123356406 is an abundant number, since it is smaller than the sum of its proper divisors (135117834).

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

123356406 is a wasteful number, since it uses less digits than its factorization.

123356406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3620.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 123356406 is about 11106.5929069179. The cubic root of 123356406 is about 497.7988655671.

The spelling of 123356406 in words is "one hundred twenty-three million, three hundred fifty-six thousand, four hundred six".