238842 has 16 divisors (see below), whose sum is σ = 530880. Its totient is φ = 79596.

The previous prime is 238841. The next prime is 238853. The reversal of 238842 is 248832.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (238841) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 2158 + ... + 2265.

It is an arithmetic number, because the mean of its divisors is an integer number (33180).

2²³⁸⁸⁴² is an apocalyptic number.

238842 is an abundant number, since it is smaller than the sum of its proper divisors (292038).

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

238842 is a wasteful number, since it uses less digits than its factorization.

238842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4434 (or 4428 counting only the distinct ones).

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

The square root of 238842 is about 488.7146406647. The cubic root of 238842 is about 62.0445396227.

The spelling of 238842 in words is "two hundred thirty-eight thousand, eight hundred forty-two".