304542 has 24 divisors (see below), whose sum is σ = 754416. Its totient is φ = 86976.

The previous prime is 304541. The next prime is 304553. The reversal of 304542 is 245403.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1083 + ... + 1334.

It is an arithmetic number, because the mean of its divisors is an integer number (31434).

2³⁰⁴⁵⁴² is an apocalyptic number.

304542 is an abundant number, since it is smaller than the sum of its proper divisors (449874).

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

304542 is a wasteful number, since it uses less digits than its factorization.

304542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2432 (or 2429 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 304542 is about 551.8532413604. The cubic root of 304542 is about 67.2794447328.

Adding to 304542 its reverse (245403), we get a palindrome (549945).

The spelling of 304542 in words is "three hundred four thousand, five hundred forty-two".