123413212534123 has 4 divisors (see below), whose sum is σ = 123768870207480. Its totient is φ = 123057554860768.

The previous prime is 123413212534099. The next prime is 123413212534133. The reversal of 123413212534123 is 321435212314321.

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 123413212534123 - 2¹⁷ = 123413212403051 is a prime.

It is a super-2 number, since 2×123413212534123² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123413212534133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177828836158 + ... + 177828836851.

It is an arithmetic number, because the mean of its divisors is an integer number (30942217551870).

Almost surely, 2^{123413212534123} is an apocalyptic number.

123413212534123 is a deficient number, since it is larger than the sum of its proper divisors (355657673357).

123413212534123 is an equidigital number, since it uses as much as digits as its factorization.

123413212534123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355657673356.

The product of its digits is 103680, while the sum is 37.

Adding to 123413212534123 its reverse (321435212314321), we get a palindrome (444848424848444).

The spelling of 123413212534123 in words is "one hundred twenty-three trillion, four hundred thirteen billion, two hundred twelve million, five hundred thirty-four thousand, one hundred twenty-three".