388502142 has 32 divisors (see below), whose sum is σ = 909667584. Its totient is φ = 108292800.

The previous prime is 388502129. The next prime is 388502143. The reversal of 388502142 is 241205883.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388502143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111084 + ... + 114527.

It is an arithmetic number, because the mean of its divisors is an integer number (28427112).

Almost surely, 2^388502142 is an apocalyptic number.

388502142 is an abundant number, since it is smaller than the sum of its proper divisors (521165442).

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

388502142 is a wasteful number, since it uses less digits than its factorization.

388502142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225664.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 388502142 is about 19710.4576811397. The cubic root of 388502142 is about 729.6778099064.

The spelling of 388502142 in words is "three hundred eighty-eight million, five hundred two thousand, one hundred forty-two".