236442 has 16 divisors (see below), whose sum is σ = 477792. Its totient is φ = 78000.

The previous prime is 236429. The next prime is 236449. The reversal of 236442 is 244632.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 236442.

It is not an unprimeable number, because it can be changed into a prime (236449) by changing a digit.

236442 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, 817 + ... + 1067.

It is an arithmetic number, because the mean of its divisors is an integer number (29862).

2²³⁶⁴⁴² is an apocalyptic number.

236442 is an abundant number, since it is smaller than the sum of its proper divisors (241350).

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

236442 is a wasteful number, since it uses less digits than its factorization.

236442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413.

The product of its digits is 1152, while the sum is 21.

The square root of 236442 is about 486.2530205562. The cubic root of 236442 is about 61.8360217726.

The spelling of 236442 in words is "two hundred thirty-six thousand, four hundred forty-two".