12340424 has 24 divisors (see below), whose sum is σ = 24425910. Its totient is φ = 5844096.

The previous prime is 12340423. The next prime is 12340429. The reversal of 12340424 is 42404321.

It can be written as a sum of positive squares in only one way, i.e., 11437924 + 902500 = 3382^2 + 950^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12340396 and 12340405.

It is not an unprimeable number, because it can be changed into a prime (12340421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 752 + ... + 5024.

Almost surely, 2^12340424 is an apocalyptic number.

It is an amenable number.

12340424 is a deficient number, since it is larger than the sum of its proper divisors (12085486).

12340424 is a wasteful number, since it uses less digits than its factorization.

12340424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4317 (or 4294 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 12340424 is about 3512.8939636715. The cubic root of 12340424 is about 231.0876275311.

Adding to 12340424 its reverse (42404321), we get a palindrome (54744745).

The spelling of 12340424 in words is "twelve million, three hundred forty thousand, four hundred twenty-four".