12149145 has 12 divisors (see below), whose sum is σ = 21058596. Its totient is φ = 6479520.

The previous prime is 12149141. The next prime is 12149183. The reversal of 12149145 is 54194121.

12149145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5934096 + 6215049 = 2436^2 + 2493^2 .

It is not a de Polignac number, because 12149145 - 2² = 12149141 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12149141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134946 + ... + 135035.

It is an arithmetic number, because the mean of its divisors is an integer number (1754883).

Almost surely, 2^12149145 is an apocalyptic number.

12149145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12149145 is a deficient number, since it is larger than the sum of its proper divisors (8909451).

12149145 is a wasteful number, since it uses less digits than its factorization.

12149145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269992 (or 269989 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 12149145 is about 3485.5623649563. The cubic root of 12149145 is about 229.8874370437.

The spelling of 12149145 in words is "twelve million, one hundred forty-nine thousand, one hundred forty-five".