123041004031123 has 4 divisors (see below), whose sum is σ = 123042124416688. Its totient is φ = 123039883645560.

The previous prime is 123041004031069. The next prime is 123041004031133. The reversal of 123041004031123 is 321130400140321.

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 123041004031123 - 2⁹ = 123041004030611 is a prime.

It is a super-2 number, since 2×123041004031123² (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 (123041004031133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 560028036 + ... + 560247697.

It is an arithmetic number, because the mean of its divisors is an integer number (30760531104172).

Almost surely, 2^{123041004031123} is an apocalyptic number.

123041004031123 is a deficient number, since it is larger than the sum of its proper divisors (1120385565).

123041004031123 is a wasteful number, since it uses less digits than its factorization.

123041004031123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120385564.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 123041004031123 its reverse (321130400140321), we get a palindrome (444171404171444).

The spelling of 123041004031123 in words is "one hundred twenty-three trillion, forty-one billion, four million, thirty-one thousand, one hundred twenty-three".