542504 has 16 divisors (see below), whose sum is σ = 1077300. Its totient is φ = 255232.

The previous prime is 542497. The next prime is 542519. The reversal of 542504 is 405245.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 532900 + 9604 = 730^2 + 98^2 .

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 542504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1859 + ... + 2130.

2⁵⁴²⁵⁰⁴ is an apocalyptic number.

It is an amenable number.

542504 is a deficient number, since it is larger than the sum of its proper divisors (534796).

542504 is a wasteful number, since it uses less digits than its factorization.

542504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4012 (or 4008 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 542504 is about 736.5487085047. The cubic root of 542504 is about 81.5582029953.

Adding to 542504 its reverse (405245), we get a palindrome (947749).

The spelling of 542504 in words is "five hundred forty-two thousand, five hundred four".