238542 has 16 divisors (see below), whose sum is σ = 483840. Its totient is φ = 78392.

The previous prime is 238531. The next prime is 238547. The reversal of 238542 is 245832.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238547) by changing a digit.

238542 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 in 7 ways as a sum of consecutive naturals, for example, 259 + ... + 737.

It is an arithmetic number, because the mean of its divisors is an integer number (30240).

2²³⁸⁵⁴² is an apocalyptic number.

238542 is an abundant number, since it is smaller than the sum of its proper divisors (245298).

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

238542 is a wasteful number, since it uses less digits than its factorization.

238542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567.

The product of its digits is 1920, while the sum is 24.

The square root of 238542 is about 488.4076166482. The cubic root of 238542 is about 62.0185515071.

It can be divided in two parts, 238 and 542, that added together give a triangular number (780 = T₃₉).

The spelling of 238542 in words is "two hundred thirty-eight thousand, five hundred forty-two".