12145156 has 12 divisors (see below), whose sum is σ = 21545692. Its totient is φ = 5989248.

The previous prime is 12145153. The next prime is 12145163. The reversal of 12145156 is 65154121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4494400 + 7650756 = 2120^2 + 2766^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12145156.

It is not an unprimeable number, because it can be changed into a prime (12145151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20505 + ... + 21088.

Almost surely, 2^12145156 is an apocalyptic number.

It is an amenable number.

12145156 is a deficient number, since it is larger than the sum of its proper divisors (9400536).

12145156 is a wasteful number, since it uses less digits than its factorization.

12145156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41670 (or 41668 counting only the distinct ones).

The product of its digits is 1200, while the sum is 25.

The square root of 12145156 is about 3484.9901004164. The cubic root of 12145156 is about 229.8622741929.

Adding to 12145156 its reverse (65154121), we get a palindrome (77299277).

The spelling of 12145156 in words is "twelve million, one hundred forty-five thousand, one hundred fifty-six".