123788942 has 8 divisors (see below), whose sum is σ = 187419096. Its totient is φ = 61315912.

The previous prime is 123788897. The next prime is 123788957. The reversal of 123788942 is 249887321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×123788942² = 30647404322958728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123788893 and 123788902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289013 + ... + 289440.

It is an arithmetic number, because the mean of its divisors is an integer number (23427387).

Almost surely, 2^123788942 is an apocalyptic number.

123788942 is a deficient number, since it is larger than the sum of its proper divisors (63630154).

123788942 is a wasteful number, since it uses less digits than its factorization.

123788942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578562.

The product of its digits is 193536, while the sum is 44.

The square root of 123788942 is about 11126.0479057031. The cubic root of 123788942 is about 498.3800129525.

The spelling of 123788942 in words is "one hundred twenty-three million, seven hundred eighty-eight thousand, nine hundred forty-two".