13120123423 has 4 divisors (see below), whose sum is σ = 14312861928. Its totient is φ = 11927384920.

The previous prime is 13120123411. The next prime is 13120123469. The reversal of 13120123423 is 32432102131.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13120123423 - 2⁵ = 13120123391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13120123394 and 13120123403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13120123483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 596369236 + ... + 596369257.

It is an arithmetic number, because the mean of its divisors is an integer number (3578215482).

Almost surely, 2^13120123423 is an apocalyptic number.

13120123423 is a deficient number, since it is larger than the sum of its proper divisors (1192738505).

13120123423 is a wasteful number, since it uses less digits than its factorization.

13120123423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192738504.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 13120123423 its reverse (32432102131), we get a palindrome (45552225554).

The spelling of 13120123423 in words is "thirteen billion, one hundred twenty million, one hundred twenty-three thousand, four hundred twenty-three".