12243240423 has 16 divisors (see below), whose sum is σ = 18926749440. Its totient is φ = 7807283352.

The previous prime is 12243240397. The next prime is 12243240487. The reversal of 12243240423 is 32404234221.

12243240423 is a `hidden beast` number, since 1 + 224 + 32 + 404 + 2 + 3 = 666.

12243240423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12243240423 - 2¹³ = 12243232231 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12243242423) 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 15 ways as a sum of consecutive naturals, for example, 9857061 + ... + 9858302.

It is an arithmetic number, because the mean of its divisors is an integer number (1182921840).

Almost surely, 2^12243240423 is an apocalyptic number.

12243240423 is a deficient number, since it is larger than the sum of its proper divisors (6683509017).

12243240423 is a wasteful number, since it uses less digits than its factorization.

12243240423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19715395 (or 19715389 counting only the distinct ones).

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

Adding to 12243240423 its reverse (32404234221), we get a palindrome (44647474644).

The spelling of 12243240423 in words is "twelve billion, two hundred forty-three million, two hundred forty thousand, four hundred twenty-three".