123444423 has 12 divisors (see below), whose sum is σ = 178599408. Its totient is φ = 82162080.

The previous prime is 123444413. The next prime is 123444479. The reversal of 123444423 is 324444321.

It is a happy number.

123444423 is a `hidden beast` number, since 1 + 234 + 4 + 4 + 423 = 666.

It is not a de Polignac number, because 123444423 - 2⁴ = 123444407 is a prime.

It is a super-3 number, since 3×123444423³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123444413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5190 + ... + 16547.

It is an arithmetic number, because the mean of its divisors is an integer number (14883284).

Almost surely, 2^123444423 is an apocalyptic number.

123444423 is a deficient number, since it is larger than the sum of its proper divisors (55154985).

123444423 is a wasteful number, since it uses less digits than its factorization.

123444423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22374 (or 22371 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 123444423 is about 11110.5545766177. The cubic root of 123444423 is about 497.9172335476.

Adding to 123444423 its reverse (324444321), we get a palindrome (447888744).

The spelling of 123444423 in words is "one hundred twenty-three million, four hundred forty-four thousand, four hundred twenty-three".