388142 has 4 divisors (see below), whose sum is σ = 582216. Its totient is φ = 194070.

The previous prime is 388133. The next prime is 388159. The reversal of 388142 is 241883.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 388142.

It is an unprimeable number.

388142 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97034 + ... + 97037.

It is an arithmetic number, because the mean of its divisors is an integer number (145554).

2³⁸⁸¹⁴² is an apocalyptic number.

388142 is a deficient number, since it is larger than the sum of its proper divisors (194074).

388142 is a wasteful number, since it uses less digits than its factorization.

388142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194073.

The product of its digits is 1536, while the sum is 26.

The square root of 388142 is about 623.0104332995. The cubic root of 388142 is about 72.9452269435.

The spelling of 388142 in words is "three hundred eighty-eight thousand, one hundred forty-two".