12240423 has 32 divisors (see below), whose sum is σ = 20007680. Its totient is φ = 7348320.

The previous prime is 12240419. The next prime is 12240433. The reversal of 12240423 is 32404221.

12240423 is a `hidden beast` number, since 1 + 2 + 240 + 423 = 666.

It is not a de Polignac number, because 12240423 - 2² = 12240419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12240396 and 12240405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12240413) 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 31 ways as a sum of consecutive naturals, for example, 14688 + ... + 15498.

It is an arithmetic number, because the mean of its divisors is an integer number (625240).

Almost surely, 2^12240423 is an apocalyptic number.

12240423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12240423 is a deficient number, since it is larger than the sum of its proper divisors (7767257).

12240423 is a wasteful number, since it uses less digits than its factorization.

12240423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876 (or 870 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 12240423 is about 3498.6315896362. The cubic root of 12240423 is about 230.4617252698.

Adding to 12240423 its reverse (32404221), we get a palindrome (44644644).

The spelling of 12240423 in words is "twelve million, two hundred forty thousand, four hundred twenty-three".