12105075 has 24 divisors (see below), whose sum is σ = 20220928. Its totient is φ = 6389280.

The previous prime is 12105073. The next prime is 12105077. The reversal of 12105075 is 57050121.

It is an interprime number because it is at equal distance from previous prime (12105073) and next prime (12105077).

It is not a de Polignac number, because 12105075 - 2¹ = 12105073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12105073) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6942 + ... + 8508.

Almost surely, 2^12105075 is an apocalyptic number.

12105075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12105075 is a deficient number, since it is larger than the sum of its proper divisors (8115853).

12105075 is a wasteful number, since it uses less digits than its factorization.

12105075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1683 (or 1678 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 12105075 is about 3479.2348296716. The cubic root of 12105075 is about 229.6091344952.

Adding to 12105075 its reverse (57050121), we get a palindrome (69155196).

The spelling of 12105075 in words is "twelve million, one hundred five thousand, seventy-five".