624542 has 8 divisors (see below), whose sum is σ = 977616. Its totient is φ = 298672.

The previous prime is 624541. The next prime is 624577. The reversal of 624542 is 245426.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 624542.

It is not an unprimeable number, because it can be changed into a prime (624541) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6743 + ... + 6834.

It is an arithmetic number, because the mean of its divisors is an integer number (122202).

2⁶²⁴⁵⁴² is an apocalyptic number.

624542 is a deficient number, since it is larger than the sum of its proper divisors (353074).

624542 is a wasteful number, since it uses less digits than its factorization.

624542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13602.

The product of its digits is 1920, while the sum is 23.

The square root of 624542 is about 790.2796973224. The cubic root of 624542 is about 85.4779077241.

Adding to 624542 its reverse (245426), we get a palindrome (869968).

The spelling of 624542 in words is "six hundred twenty-four thousand, five hundred forty-two".