123406158 has 16 divisors (see below), whose sum is σ = 247798656. Its totient is φ = 40971000.

The previous prime is 123406147. The next prime is 123406169. The reversal of 123406158 is 851604321.

It is an interprime number because it is at equal distance from previous prime (123406147) and next prime (123406169).

It is a Curzon number.

It is a congruent 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, 39466 + ... + 42477.

It is an arithmetic number, because the mean of its divisors is an integer number (15487416).

Almost surely, 2^123406158 is an apocalyptic number.

123406158 is an abundant number, since it is smaller than the sum of its proper divisors (124392498).

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

123406158 is a wasteful number, since it uses less digits than its factorization.

123406158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82199.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 123406158 is about 11108.8324318985. The cubic root of 123406158 is about 497.8657805092.

The spelling of 123406158 in words is "one hundred twenty-three million, four hundred six thousand, one hundred fifty-eight".