515503450242 has 24 divisors (see below), whose sum is σ = 1218462701040. Its totient is φ = 156213166680.

The previous prime is 515503450219. The next prime is 515503450261. The reversal of 515503450242 is 242054305515.

515503450242 is a `hidden beast` number, since 5 + 1 + 550 + 34 + 50 + 24 + 2 = 666.

It is a super-2 number, since 2×515503450242² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 515503450197 and 515503450206.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1301776192 + ... + 1301776587.

It is an arithmetic number, because the mean of its divisors is an integer number (50769279210).

Almost surely, 2^515503450242 is an apocalyptic number.

515503450242 is an abundant number, since it is smaller than the sum of its proper divisors (702959250798).

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

515503450242 is a wasteful number, since it uses less digits than its factorization.

515503450242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2603552798 (or 2603552795 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

Adding to 515503450242 its reverse (242054305515), we get a palindrome (757557755757).

The spelling of 515503450242 in words is "five hundred fifteen billion, five hundred three million, four hundred fifty thousand, two hundred forty-two".