123012321430045 has 16 divisors (see below), whose sum is σ = 147949349401152. Its totient is φ = 98186818737280.

The previous prime is 123012321430027. The next prime is 123012321430049. The reversal of 123012321430045 is 540034123210321.

It is not a de Polignac number, because 123012321430045 - 2¹¹ = 123012321427997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123012321429989 and 123012321430016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123012321430049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 356715105 + ... + 357059785.

It is an arithmetic number, because the mean of its divisors is an integer number (9246834337572).

Almost surely, 2^{123012321430045} is an apocalyptic number.

It is an amenable number.

123012321430045 is a deficient number, since it is larger than the sum of its proper divisors (24937027971107).

123012321430045 is a wasteful number, since it uses less digits than its factorization.

123012321430045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506252.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 123012321430045 its reverse (540034123210321), we get a palindrome (663046444640366).

The spelling of 123012321430045 in words is "one hundred twenty-three trillion, twelve billion, three hundred twenty-one million, four hundred thirty thousand, forty-five".