502423430121 has 12 divisors (see below), whose sum is σ = 729917663748. Its totient is φ = 333012831264.

The previous prime is 502423430087. The next prime is 502423430129. The reversal of 502423430121 is 121034324205.

502423430121 is a `hidden beast` number, since 502 + 4 + 2 + 3 + 4 + 30 + 121 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 231518794896 + 270904635225 = 481164^2 + 520485^2 .

It is not a de Polignac number, because 502423430121 - 2⁹ = 502423429609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (502423430129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 161341870 + ... + 161344983.

It is an arithmetic number, because the mean of its divisors is an integer number (60826471979).

Almost surely, 2^502423430121 is an apocalyptic number.

It is an amenable number.

502423430121 is a deficient number, since it is larger than the sum of its proper divisors (227494233627).

502423430121 is a wasteful number, since it uses less digits than its factorization.

502423430121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322687032 (or 322687029 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 502423430121 its reverse (121034324205), we get a palindrome (623457754326).

The spelling of 502423430121 in words is "five hundred two billion, four hundred twenty-three million, four hundred thirty thousand, one hundred twenty-one".