504003420 has 72 divisors (see below), whose sum is σ = 1618750224. Its totient is φ = 126494208.

The previous prime is 504003407. The next prime is 504003427. The reversal of 504003420 is 24300405.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 504003393 and 504003402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504003427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79294 + ... + 85413.

It is an arithmetic number, because the mean of its divisors is an integer number (22482642).

Almost surely, 2^504003420 is an apocalyptic number.

It is an amenable number.

504003420 is an abundant number, since it is smaller than the sum of its proper divisors (1114746804).

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

504003420 is a wasteful number, since it uses less digits than its factorization.

504003420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164739 (or 164734 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 504003420 is about 22450.0204899684. The cubic root of 504003420 is about 795.8132416249.

Adding to 504003420 its reverse (24300405), we get a palindrome (528303825).

The spelling of 504003420 in words is "five hundred four million, three thousand, four hundred twenty".