12418243 has 4 divisors (see below), whose sum is σ = 12429520. Its totient is φ = 12406968.

The previous prime is 12418213. The next prime is 12418277. The reversal of 12418243 is 34281421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12418243 - 2⁹ = 12417731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12418213) 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, 3783 + ... + 6256.

It is an arithmetic number, because the mean of its divisors is an integer number (3107380).

Almost surely, 2^12418243 is an apocalyptic number.

12418243 is a deficient number, since it is larger than the sum of its proper divisors (11277).

12418243 is a wasteful number, since it uses less digits than its factorization.

12418243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11276.

The product of its digits is 1536, while the sum is 25.

The square root of 12418243 is about 3523.9527522372. The cubic root of 12418243 is about 231.5723580271.

Adding to 12418243 its reverse (34281421), we get a palindrome (46699664).

The spelling of 12418243 in words is "twelve million, four hundred eighteen thousand, two hundred forty-three".