516642123 has 32 divisors (see below), whose sum is σ = 736952832. Its totient is φ = 321235200.

The previous prime is 516642103. The next prime is 516642143. The reversal of 516642123 is 321246615.

It is an interprime number because it is at equal distance from previous prime (516642103) and next prime (516642143).

It is not a de Polignac number, because 516642123 - 2¹² = 516638027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (516642103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 550911 + ... + 551847.

It is an arithmetic number, because the mean of its divisors is an integer number (23029776).

Almost surely, 2^516642123 is an apocalyptic number.

516642123 is a deficient number, since it is larger than the sum of its proper divisors (220310709).

516642123 is a wasteful number, since it uses less digits than its factorization.

516642123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155.

The product of its digits is 8640, while the sum is 30.

The square root of 516642123 is about 22729.7629332116. The cubic root of 516642123 is about 802.4105019513.

Adding to 516642123 its reverse (321246615), we get a palindrome (837888738).

The spelling of 516642123 in words is "five hundred sixteen million, six hundred forty-two thousand, one hundred twenty-three".