123012423 has 12 divisors (see below), whose sum is σ = 182018928. Its totient is φ = 80007840.

The previous prime is 123012419. The next prime is 123012431. The reversal of 123012423 is 324210321.

123012423 is a `hidden beast` number, since 1 + 230 + 12 + 423 = 666.

It is not a de Polignac number, because 123012423 - 2² = 123012419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123012396 and 123012405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123012473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166315 + ... + 167052.

It is an arithmetic number, because the mean of its divisors is an integer number (15168244).

Almost surely, 2^123012423 is an apocalyptic number.

123012423 is a deficient number, since it is larger than the sum of its proper divisors (59006505).

123012423 is a wasteful number, since it uses less digits than its factorization.

123012423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333414 (or 333411 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 123012423 is about 11091.0965643619. The cubic root of 123012423 is about 497.3357258356.

Adding to 123012423 its reverse (324210321), we get a palindrome (447222744).

The spelling of 123012423 in words is "one hundred twenty-three million, twelve thousand, four hundred twenty-three".