12340437 has 8 divisors (see below), whose sum is σ = 16623936. Its totient is φ = 8141952.

The previous prime is 12340429. The next prime is 12340459. The reversal of 12340437 is 73404321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12340437 - 2³ = 12340429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12340637) 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 7 ways as a sum of consecutive naturals, for example, 20913 + ... + 21494.

It is an arithmetic number, because the mean of its divisors is an integer number (2077992).

Almost surely, 2^12340437 is an apocalyptic number.

It is an amenable number.

12340437 is a deficient number, since it is larger than the sum of its proper divisors (4283499).

12340437 is an equidigital number, since it uses as much as digits as its factorization.

12340437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42507.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 12340437 is about 3512.8958139973. The cubic root of 12340437 is about 231.0877086774.

Adding to 12340437 its reverse (73404321), we get a palindrome (85744758).

The spelling of 12340437 in words is "twelve million, three hundred forty thousand, four hundred thirty-seven".