12145636 has 12 divisors (see below), whose sum is σ = 22373680. Its totient is φ = 5753160.

The previous prime is 12145607. The next prime is 12145669. The reversal of 12145636 is 63654121.

It is a super-4 number, since 4×12145636⁴ (a number of 29 digits) contains 4444 as substring.

It is an alternating number because its digits alternate between odd and even.

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, 79830 + ... + 79981.

Almost surely, 2^12145636 is an apocalyptic number.

It is an amenable number.

12145636 is a deficient number, since it is larger than the sum of its proper divisors (10228044).

12145636 is a wasteful number, since it uses less digits than its factorization.

12145636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159834 (or 159832 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 12145636 is about 3485.0589665026. The cubic root of 12145636 is about 229.8653023532.

Adding to 12145636 its reverse (63654121), we get a palindrome (75799757).

The spelling of 12145636 in words is "twelve million, one hundred forty-five thousand, six hundred thirty-six".