388242 has 12 divisors (see below), whose sum is σ = 841230. Its totient is φ = 129408.

The previous prime is 388237. The next prime is 388253. The reversal of 388242 is 242883.

It can be written as a sum of positive squares in only one way, i.e., 385641 + 2601 = 621^2 + 51^2 .

It is an unprimeable number.

388242 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10767 + ... + 10802.

2³⁸⁸²⁴² is an apocalyptic number.

388242 is an abundant number, since it is smaller than the sum of its proper divisors (452988).

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

388242 is a wasteful number, since it uses less digits than its factorization.

388242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21577 (or 21574 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 388242 is about 623.0906836087. The cubic root of 388242 is about 72.9514908850.

It can be divided in two parts, 388 and 242, that added together give a triangular number (630 = T₃₅).

The spelling of 388242 in words is "three hundred eighty-eight thousand, two hundred forty-two".