12135985 has 8 divisors (see below), whose sum is σ = 14598720. Its totient is φ = 9685104.

The previous prime is 12135979. The next prime is 12135997. The reversal of 12135985 is 58953121.

12135985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12135985 - 2¹³ = 12127793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12135985.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 525 + ... + 4954.

It is an arithmetic number, because the mean of its divisors is an integer number (1824840).

Almost surely, 2^12135985 is an apocalyptic number.

It is an amenable number.

12135985 is a deficient number, since it is larger than the sum of its proper divisors (2462735).

12135985 is an equidigital number, since it uses as much as digits as its factorization.

12135985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5927.

The product of its digits is 10800, while the sum is 34.

The square root of 12135985 is about 3483.6740662697. The cubic root of 12135985 is about 229.8044020736.

The spelling of 12135985 in words is "twelve million, one hundred thirty-five thousand, nine hundred eighty-five".