634542 has 16 divisors (see below), whose sum is σ = 1343952. Its totient is φ = 199040.

The previous prime is 634541. The next prime is 634567. The reversal of 634542 is 245436.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3009 + ... + 3212.

It is an arithmetic number, because the mean of its divisors is an integer number (83997).

2⁶³⁴⁵⁴² is an apocalyptic number.

634542 is an abundant number, since it is smaller than the sum of its proper divisors (709410).

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

634542 is a wasteful number, since it uses less digits than its factorization.

634542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6243.

The product of its digits is 2880, while the sum is 24.

The square root of 634542 is about 796.5814459300. The cubic root of 634542 is about 85.9317107064.

Adding to 634542 its reverse (245436), we get a palindrome (879978).

It can be divided in two parts, 634 and 542, that added together give a triangular number (1176 = T₄₈).

The spelling of 634542 in words is "six hundred thirty-four thousand, five hundred forty-two".