503240630421 has 16 divisors (see below), whose sum is σ = 672549696000. Its totient is φ = 334712929008.

The previous prime is 503240630381. The next prime is 503240630437. The reversal of 503240630421 is 124036042305.

It is not a de Polignac number, because 503240630421 - 2²¹ = 503238533269 is a prime.

It is a super-2 number, since 2×503240630421² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503240630441) 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, 8205930 + ... + 8267028.

It is an arithmetic number, because the mean of its divisors is an integer number (42034356000).

Almost surely, 2^503240630421 is an apocalyptic number.

It is an amenable number.

503240630421 is a deficient number, since it is larger than the sum of its proper divisors (169309065579).

503240630421 is a wasteful number, since it uses less digits than its factorization.

503240630421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67448.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 503240630421 its reverse (124036042305), we get a palindrome (627276672726).

The spelling of 503240630421 in words is "five hundred three billion, two hundred forty million, six hundred thirty thousand, four hundred twenty-one".