123942357 has 72 divisors (see below), whose sum is σ = 229057920. Its totient is φ = 63201600.

The previous prime is 123942349. The next prime is 123942391. The reversal of 123942357 is 753249321.

It is not a de Polignac number, because 123942357 - 2³ = 123942349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123940357) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 541119 + ... + 541347.

It is an arithmetic number, because the mean of its divisors is an integer number (3181360).

Almost surely, 2^123942357 is an apocalyptic number.

It is an amenable number.

123942357 is a deficient number, since it is larger than the sum of its proper divisors (105115563).

123942357 is a wasteful number, since it uses less digits than its factorization.

123942357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 321 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 123942357 is about 11132.9401776889. The cubic root of 123942357 is about 498.5858132561.

The spelling of 123942357 in words is "one hundred twenty-three million, nine hundred forty-two thousand, three hundred fifty-seven".