388695042 has 12 divisors (see below), whose sum is σ = 842172630. Its totient is φ = 129565008.

The previous prime is 388695031. The next prime is 388695049. The reversal of 388695042 is 240596883.

388695042 is a `hidden beast` number, since 3 + 88 + 69 + 504 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 291692241 + 97002801 = 17079^2 + 9849^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (388695049) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10797067 + ... + 10797102.

Almost surely, 2^388695042 is an apocalyptic number.

388695042 is an abundant number, since it is smaller than the sum of its proper divisors (453477588).

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

388695042 is a wasteful number, since it uses less digits than its factorization.

388695042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21594177 (or 21594174 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 388695042 is about 19715.3504153489. The cubic root of 388695042 is about 729.7985570398.

The spelling of 388695042 in words is "three hundred eighty-eight million, six hundred ninety-five thousand, forty-two".