516510242 has 16 divisors (see below), whose sum is σ = 802510200. Its totient is φ = 249326224.

The previous prime is 516510233. The next prime is 516510257. The reversal of 516510242 is 242015615.

It can be written as a sum of positive squares in 4 ways, for example, as 172370641 + 344139601 = 13129^2 + 18551^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43484 + ... + 54072.

Almost surely, 2^516510242 is an apocalyptic number.

516510242 is a deficient number, since it is larger than the sum of its proper divisors (285999958).

516510242 is an equidigital number, since it uses as much as digits as its factorization.

516510242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10678 (or 10620 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 516510242 is about 22726.8616839193. The cubic root of 516510242 is about 802.3422201883.

Adding to 516510242 its reverse (242015615), we get a palindrome (758525857).

The spelling of 516510242 in words is "five hundred sixteen million, five hundred ten thousand, two hundred forty-two".