123200434221423 has 32 divisors (see below), whose sum is σ = 179038398900480. Its totient is φ = 74900600536320.

The previous prime is 123200434221401. The next prime is 123200434221443. The reversal of 123200434221423 is 324122434002321.

It is a happy number.

It is not a de Polignac number, because 123200434221423 - 2⁹ = 123200434220911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123200434221443) 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 31 ways as a sum of consecutive naturals, for example, 159947643 + ... + 160716051.

It is an arithmetic number, because the mean of its divisors is an integer number (5594949965640).

Almost surely, 2^{123200434221423} is an apocalyptic number.

123200434221423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

123200434221423 is a deficient number, since it is larger than the sum of its proper divisors (55837964679057).

123200434221423 is a wasteful number, since it uses less digits than its factorization.

123200434221423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818039.

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 123200434221423 its reverse (324122434002321), we get a palindrome (447322868223744).

The spelling of 123200434221423 in words is "one hundred twenty-three trillion, two hundred billion, four hundred thirty-four million, two hundred twenty-one thousand, four hundred twenty-three".