12145612 has 12 divisors (see below), whose sum is σ = 21281176. Its totient is φ = 6065280.

The previous prime is 12145607. The next prime is 12145669. The reversal of 12145612 is 21654121.

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, 3388 + ... + 5980.

Almost surely, 2^12145612 is an apocalyptic number.

It is an amenable number.

12145612 is a deficient number, since it is larger than the sum of its proper divisors (9135564).

12145612 is a wasteful number, since it uses less digits than its factorization.

12145612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3768 (or 3766 counting only the distinct ones).

The product of its digits is 480, while the sum is 22.

The square root of 12145612 is about 3485.0555232306. The cubic root of 12145612 is about 229.8651509471.

Adding to 12145612 its reverse (21654121), we get a palindrome (33799733).

The spelling of 12145612 in words is "twelve million, one hundred forty-five thousand, six hundred twelve".