123040344123 has 48 divisors (see below), whose sum is σ = 189233684640. Its totient is φ = 76899110400.

The previous prime is 123040344109. The next prime is 123040344157. The reversal of 123040344123 is 321443040321.

123040344123 is a `hidden beast` number, since 1 + 2 + 304 + 0 + 344 + 12 + 3 = 666.

It is not a de Polignac number, because 123040344123 - 2⁴ = 123040344107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123040344023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2230665 + ... + 2285157.

It is an arithmetic number, because the mean of its divisors is an integer number (3942368430).

Almost surely, 2^123040344123 is an apocalyptic number.

123040344123 is a deficient number, since it is larger than the sum of its proper divisors (66193340517).

123040344123 is a wasteful number, since it uses less digits than its factorization.

123040344123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54780 (or 54777 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 123040344123 its reverse (321443040321), we get a palindrome (444483384444).

The spelling of 123040344123 in words is "one hundred twenty-three billion, forty million, three hundred forty-four thousand, one hundred twenty-three".