503440320124 has 48 divisors (see below), whose sum is σ = 1012350976000. Its totient is φ = 214588486656.

The previous prime is 503440320101. The next prime is 503440320139. The reversal of 503440320124 is 421023044305.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 503440320092 and 503440320101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27653977 + ... + 27672175.

Almost surely, 2^503440320124 is an apocalyptic number.

It is an amenable number.

503440320124 is an abundant number, since it is smaller than the sum of its proper divisors (508910655876).

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

503440320124 is a wasteful number, since it uses less digits than its factorization.

503440320124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23522 (or 23520 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 503440320124 its reverse (421023044305), we get a palindrome (924463364429).

The spelling of 503440320124 in words is "five hundred three billion, four hundred forty million, three hundred twenty thousand, one hundred twenty-four".