12104643 has 4 divisors (see below), whose sum is σ = 16139528. Its totient is φ = 8069760.

The previous prime is 12104639. The next prime is 12104669. The reversal of 12104643 is 34640121.

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

It is not a de Polignac number, because 12104643 - 2² = 12104639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12100643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2017438 + ... + 2017443.

It is an arithmetic number, because the mean of its divisors is an integer number (4034882).

Almost surely, 2^12104643 is an apocalyptic number.

12104643 is a deficient number, since it is larger than the sum of its proper divisors (4034885).

12104643 is an equidigital number, since it uses as much as digits as its factorization.

12104643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4034884.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 12104643 is about 3479.1727465017. The cubic root of 12104643 is about 229.6064030698.

Adding to 12104643 its reverse (34640121), we get a palindrome (46744764).

The spelling of 12104643 in words is "twelve million, one hundred four thousand, six hundred forty-three".