235842 has 16 divisors (see below), whose sum is σ = 492480. Its totient is φ = 75152.

The previous prime is 235813. The next prime is 235849. The reversal of 235842 is 248532.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 235842.

It is not an unprimeable number, because it can be changed into a prime (235849) by changing a digit.

235842 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 7 ways as a sum of consecutive naturals, for example, 717 + ... + 992.

It is an arithmetic number, because the mean of its divisors is an integer number (30780).

2²³⁵⁸⁴² is an apocalyptic number.

235842 is an abundant number, since it is smaller than the sum of its proper divisors (256638).

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

235842 is a wasteful number, since it uses less digits than its factorization.

235842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1737.

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

The square root of 235842 is about 485.6356659060. The cubic root of 235842 is about 61.7836720199.

The spelling of 235842 in words is "two hundred thirty-five thousand, eight hundred forty-two".