516311042 has 16 divisors (see below), whose sum is σ = 845469240. Its totient is φ = 235032192.

The previous prime is 516311039. The next prime is 516311051. The reversal of 516311042 is 240113615.

It can be written as a sum of positive squares in 4 ways, for example, as 413268241 + 103042801 = 20329^2 + 10151^2 .

It is a super-2 number, since 2×516311042² = 533154184182251528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 516310999 and 516311017.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134117 + ... + 137912.

Almost surely, 2^516311042 is an apocalyptic number.

516311042 is a deficient number, since it is larger than the sum of its proper divisors (329158198).

516311042 is a wasteful number, since it uses less digits than its factorization.

516311042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272117.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 516311042 is about 22722.4787820343. The cubic root of 516311042 is about 802.2390617814.

Adding to 516311042 its reverse (240113615), we get a palindrome (756424657).

The spelling of 516311042 in words is "five hundred sixteen million, three hundred eleven thousand, forty-two".