123134404423 has 4 divisors (see below), whose sum is σ = 123135205248. Its totient is φ = 123133603600.

The previous prime is 123134404343. The next prime is 123134404429. The reversal of 123134404423 is 324404431321.

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 a de Polignac number, because none of the positive numbers 2^k-123134404423 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 (123134404429) 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, 89086 + ... + 504187.

It is an arithmetic number, because the mean of its divisors is an integer number (30783801312).

Almost surely, 2^123134404423 is an apocalyptic number.

123134404423 is a deficient number, since it is larger than the sum of its proper divisors (800825).

123134404423 is an equidigital number, since it uses as much as digits as its factorization.

123134404423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800824.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 123134404423 its reverse (324404431321), we get a palindrome (447538835744).

The spelling of 123134404423 in words is "one hundred twenty-three billion, one hundred thirty-four million, four hundred four thousand, four hundred twenty-three".