12305105 has 4 divisors (see below), whose sum is σ = 14766132. Its totient is φ = 9844080.

The previous prime is 12305071. The next prime is 12305113. The reversal of 12305105 is 50150321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50150321 = 13 ⋅3857717.

It can be written as a sum of positive squares in 2 ways, for example, as 2676496 + 9628609 = 1636^2 + 3103^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12305105 is a prime.

It is a super-2 number, since 2×12305105² = 302831218122050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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, 1230506 + ... + 1230515.

It is an arithmetic number, because the mean of its divisors is an integer number (3691533).

Almost surely, 2^12305105 is an apocalyptic number.

It is an amenable number.

12305105 is a deficient number, since it is larger than the sum of its proper divisors (2461027).

12305105 is an equidigital number, since it uses as much as digits as its factorization.

12305105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2461026.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 12305105 is about 3507.8633097656. The cubic root of 12305105 is about 230.8669548644.

Adding to 12305105 its reverse (50150321), we get a palindrome (62455426).

The spelling of 12305105 in words is "twelve million, three hundred five thousand, one hundred five".