123121330423 has 16 divisors (see below), whose sum is σ = 151582878720. Its totient is φ = 97383221856.

The previous prime is 123121330421. The next prime is 123121330489. The reversal of 123121330423 is 324033121321.

It is a cyclic number.

It is not a de Polignac number, because 123121330423 - 2¹ = 123121330421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123121330421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66936 + ... + 500722.

It is an arithmetic number, because the mean of its divisors is an integer number (9473929920).

Almost surely, 2^123121330423 is an apocalyptic number.

123121330423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

123121330423 is a deficient number, since it is larger than the sum of its proper divisors (28461548297).

123121330423 is a wasteful number, since it uses less digits than its factorization.

123121330423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436926.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 123121330423 its reverse (324033121321), we get a palindrome (447154451744).

The spelling of 123121330423 in words is "one hundred twenty-three billion, one hundred twenty-one million, three hundred thirty thousand, four hundred twenty-three".