12391342 has 8 divisors (see below), whose sum is σ = 19395216. Its totient is φ = 5926272.

The previous prime is 12391339. The next prime is 12391343. The reversal of 12391342 is 24319321.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12391343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134643 + ... + 134734.

It is an arithmetic number, because the mean of its divisors is an integer number (2424402).

Almost surely, 2^12391342 is an apocalyptic number.

12391342 is a deficient number, since it is larger than the sum of its proper divisors (7003874).

12391342 is a wasteful number, since it uses less digits than its factorization.

12391342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269402.

The product of its digits is 1296, while the sum is 25.

The square root of 12391342 is about 3520.1338042751. The cubic root of 12391342 is about 231.4050227162.

The spelling of 12391342 in words is "twelve million, three hundred ninety-one thousand, three hundred forty-two".