12404243 has 4 divisors (see below), whose sum is σ = 12458640. Its totient is φ = 12349848.

The previous prime is 12404201. The next prime is 12404269. The reversal of 12404243 is 34240421.

12404243 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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 12404243 - 2¹⁶ = 12338707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12404143) 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, 26855 + ... + 27312.

It is an arithmetic number, because the mean of its divisors is an integer number (3114660).

Almost surely, 2^12404243 is an apocalyptic number.

12404243 is a deficient number, since it is larger than the sum of its proper divisors (54397).

12404243 is an equidigital number, since it uses as much as digits as its factorization.

12404243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54396.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 12404243 is about 3521.9657863188. The cubic root of 12404243 is about 231.4853024456.

Adding to 12404243 its reverse (34240421), we get a palindrome (46644664).

The spelling of 12404243 in words is "twelve million, four hundred four thousand, two hundred forty-three".