504120509 has 8 divisors (see below), whose sum is σ = 526385472. Its totient is φ = 481884480.

The previous prime is 504120493. The next prime is 504120511. The reversal of 504120509 is 905021405.

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

It is a cyclic number.

It is not a de Polignac number, because 504120509 - 2⁴ = 504120493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504120569) 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, 33269 + ... + 45989.

It is an arithmetic number, because the mean of its divisors is an integer number (65798184).

Almost surely, 2^504120509 is an apocalyptic number.

It is an amenable number.

504120509 is a deficient number, since it is larger than the sum of its proper divisors (22264963).

504120509 is a wasteful number, since it uses less digits than its factorization.

504120509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14467.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 504120509 is about 22452.6281089765. The cubic root of 504120509 is about 795.8748640650.

The spelling of 504120509 in words is "five hundred four million, one hundred twenty thousand, five hundred nine".