12123042413 has 4 divisors (see below), whose sum is σ = 12123676320. Its totient is φ = 12122408508.

The previous prime is 12123042391. The next prime is 12123042427. The reversal of 12123042413 is 31424032121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31424032121 = 659 ⋅47684419.

It is a cyclic number.

It is not a de Polignac number, because 12123042413 - 2¹⁰ = 12123041389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123042433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287345 + ... + 326822.

It is an arithmetic number, because the mean of its divisors is an integer number (3030919080).

Almost surely, 2^12123042413 is an apocalyptic number.

It is an amenable number.

12123042413 is a deficient number, since it is larger than the sum of its proper divisors (633907).

12123042413 is an equidigital number, since it uses as much as digits as its factorization.

12123042413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633906.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 12123042413 its reverse (31424032121), we get a palindrome (43547074534).

The spelling of 12123042413 in words is "twelve billion, one hundred twenty-three million, forty-two thousand, four hundred thirteen".