5112005123 has 4 divisors (see below), whose sum is σ = 5112151920. Its totient is φ = 5111858328.

The previous prime is 5112005113. The next prime is 5112005147. The reversal of 5112005123 is 3215002115.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 5112005123 - 2²⁸ = 4843569667 is a prime.

It is a super-2 number, since 2×5112005123² = 52265192755156490258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5112005095 and 5112005104.

It is not an unprimeable number, because it can be changed into a prime (5112005113) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11813 + ... + 101801.

It is an arithmetic number, because the mean of its divisors is an integer number (1278037980).

Almost surely, 2^5112005123 is an apocalyptic number.

5112005123 is a deficient number, since it is larger than the sum of its proper divisors (146797).

5112005123 is an equidigital number, since it uses as much as digits as its factorization.

5112005123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146796.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 5112005123 is about 71498.2875529198. The cubic root of 5112005123 is about 1722.6501784081.

Adding to 5112005123 its reverse (3215002115), we get a palindrome (8327007238).

The spelling of 5112005123 in words is "five billion, one hundred twelve million, five thousand, one hundred twenty-three".