502120040 has 16 divisors (see below), whose sum is σ = 1129770180. Its totient is φ = 200848000.

The previous prime is 502120019. The next prime is 502120079. The reversal of 502120040 is 40021205.

It can be written as a sum of positive squares in 2 ways, for example, as 502028836 + 91204 = 22406^2 + 302^2 .

It is a junction number, because it is equal to n+sod(n) for n = 502119997 and 502120024.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6276461 + ... + 6276540.

Almost surely, 2^502120040 is an apocalyptic number.

It is an amenable number.

502120040 is an abundant number, since it is smaller than the sum of its proper divisors (627650140).

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

502120040 is a wasteful number, since it uses less digits than its factorization.

502120040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12553012 (or 12553008 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 502120040 is about 22408.0351659845. The cubic root of 502120040 is about 794.8207287983.

Adding to 502120040 its reverse (40021205), we get a palindrome (542141245).

The spelling of 502120040 in words is "five hundred two million, one hundred twenty thousand, forty".