12135305 has 32 divisors (see below), whose sum is σ = 18144000. Its totient is φ = 7587072.

The previous prime is 12135293. The next prime is 12135307. The reversal of 12135305 is 50353121.

12135305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12135305 - 2⁴ = 12135289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12135307) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67706 + ... + 67884.

It is an arithmetic number, because the mean of its divisors is an integer number (567000).

Almost surely, 2^12135305 is an apocalyptic number.

It is an amenable number.

12135305 is a deficient number, since it is larger than the sum of its proper divisors (6008695).

12135305 is a wasteful number, since it uses less digits than its factorization.

12135305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 12135305 is about 3483.5764667939. The cubic root of 12135305 is about 229.8001098822.

Adding to 12135305 its reverse (50353121), we get a palindrome (62488426).

The spelling of 12135305 in words is "twelve million, one hundred thirty-five thousand, three hundred five".