504120321 has 16 divisors (see below), whose sum is σ = 747292800. Its totient is φ = 335878704.

The previous prime is 504120319. The next prime is 504120341. The reversal of 504120321 is 123021405.

It is not a de Polignac number, because 504120321 - 2¹ = 504120319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 504120294 and 504120303.

It is not an unprimeable number, because it can be changed into a prime (504120341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50475 + ... + 59631.

It is an arithmetic number, because the mean of its divisors is an integer number (46705800).

Almost surely, 2^504120321 is an apocalyptic number.

It is an amenable number.

504120321 is a deficient number, since it is larger than the sum of its proper divisors (243172479).

504120321 is a wasteful number, since it uses less digits than its factorization.

504120321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11205 (or 11199 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 504120321 is about 22452.6239223838. The cubic root of 504120321 is about 795.8747651307.

Adding to 504120321 its reverse (123021405), we get a palindrome (627141726).

The spelling of 504120321 in words is "five hundred four million, one hundred twenty thousand, three hundred twenty-one".