12042323123 has 4 divisors (see below), whose sum is σ = 12043053288. Its totient is φ = 12041592960.

The previous prime is 12042323119. The next prime is 12042323149. The reversal of 12042323123 is 32132324021.

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

It is a cyclic number.

It is not a de Polignac number, because 12042323123 - 2² = 12042323119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12042343123) 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, 339758 + ... + 373523.

It is an arithmetic number, because the mean of its divisors is an integer number (3010763322).

Almost surely, 2^12042323123 is an apocalyptic number.

12042323123 is a deficient number, since it is larger than the sum of its proper divisors (730165).

12042323123 is an equidigital number, since it uses as much as digits as its factorization.

12042323123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730164.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 12042323123 its reverse (32132324021), we get a palindrome (44174647144).

The spelling of 12042323123 in words is "twelve billion, forty-two million, three hundred twenty-three thousand, one hundred twenty-three".