12340417 has 4 divisors (see below), whose sum is σ = 12455856. Its totient is φ = 12224980.

The previous prime is 12340411. The next prime is 12340421. The reversal of 12340417 is 71404321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71404321 = 4799 ⋅14879.

It is a cyclic number.

It is not a de Polignac number, because 12340417 - 2³ = 12340409 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12340411) 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 3 ways as a sum of consecutive naturals, for example, 57559 + ... + 57772.

It is an arithmetic number, because the mean of its divisors is an integer number (3113964).

Almost surely, 2^12340417 is an apocalyptic number.

It is an amenable number.

12340417 is a deficient number, since it is larger than the sum of its proper divisors (115439).

12340417 is a wasteful number, since it uses less digits than its factorization.

12340417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115438.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 12340417 is about 3512.8929673419. The cubic root of 12340417 is about 231.0875838370.

Adding to 12340417 its reverse (71404321), we get a palindrome (83744738).

The spelling of 12340417 in words is "twelve million, three hundred forty thousand, four hundred seventeen".