388081142 has 4 divisors (see below), whose sum is σ = 582121716. Its totient is φ = 194040570.

The previous prime is 388081121. The next prime is 388081153. The reversal of 388081142 is 241180883.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97020284 + ... + 97020287.

It is an arithmetic number, because the mean of its divisors is an integer number (145530429).

Almost surely, 2^388081142 is an apocalyptic number.

388081142 is a deficient number, since it is larger than the sum of its proper divisors (194040574).

388081142 is a wasteful number, since it uses less digits than its factorization.

388081142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194040573.

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 388081142 is about 19699.7751763821. The cubic root of 388081142 is about 729.4141430731.

The spelling of 388081142 in words is "three hundred eighty-eight million, eighty-one thousand, one hundred forty-two".