12340915 has 4 divisors (see below), whose sum is σ = 14809104. Its totient is φ = 9872728.

The previous prime is 12340907. The next prime is 12340919. The reversal of 12340915 is 51904321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51904321 = 7 ⋅7414903.

It is a cyclic number.

It is not a de Polignac number, because 12340915 - 2³ = 12340907 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12340915.

It is not an unprimeable number, because it can be changed into a prime (12340919) 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, 1234087 + ... + 1234096.

It is an arithmetic number, because the mean of its divisors is an integer number (3702276).

Almost surely, 2^12340915 is an apocalyptic number.

12340915 is a deficient number, since it is larger than the sum of its proper divisors (2468189).

12340915 is an equidigital number, since it uses as much as digits as its factorization.

12340915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2468188.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 12340915 is about 3512.9638483765. The cubic root of 12340915 is about 231.0906923237.

The spelling of 12340915 in words is "twelve million, three hundred forty thousand, nine hundred fifteen".