12080305 has 4 divisors (see below), whose sum is σ = 14496372. Its totient is φ = 9664240.

The previous prime is 12080303. The next prime is 12080311. The reversal of 12080305 is 50308021.

It is a happy number.

12080305 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 1948816 + 10131489 = 1396^2 + 3183^2 .

It is not a de Polignac number, because 12080305 - 2¹ = 12080303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12080303) 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, 1208026 + ... + 1208035.

It is an arithmetic number, because the mean of its divisors is an integer number (3624093).

Almost surely, 2^12080305 is an apocalyptic number.

It is an amenable number.

12080305 is a deficient number, since it is larger than the sum of its proper divisors (2416067).

12080305 is an equidigital number, since it uses as much as digits as its factorization.

12080305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2416066.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 12080305 is about 3475.6733160641. The cubic root of 12080305 is about 229.4524150485.

Adding to 12080305 its reverse (50308021), we get a palindrome (62388326).

The spelling of 12080305 in words is "twelve million, eighty thousand, three hundred five".