12104005 has 4 divisors (see below), whose sum is σ = 14524812. Its totient is φ = 9683200.

The previous prime is 12103999. The next prime is 12104021. The reversal of 12104005 is 50040121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5788836 + 6315169 = 2406^2 + 2513^2 .

It is not a de Polignac number, because 12104005 - 2³ = 12103997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 1210396 + ... + 1210405.

It is an arithmetic number, because the mean of its divisors is an integer number (3631203).

Almost surely, 2^12104005 is an apocalyptic number.

It is an amenable number.

12104005 is a deficient number, since it is larger than the sum of its proper divisors (2420807).

12104005 is an equidigital number, since it uses as much as digits as its factorization.

12104005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2420806.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 12104005 is about 3479.0810568310. The cubic root of 12104005 is about 229.6023690404.

Adding to 12104005 its reverse (50040121), we get a palindrome (62144126).

The spelling of 12104005 in words is "twelve million, one hundred four thousand, five".