12045128 has 16 divisors (see below), whose sum is σ = 23195580. Its totient is φ = 5859648.

The previous prime is 12045083. The next prime is 12045133. The reversal of 12045128 is 82154021.

It can be written as a sum of positive squares in 2 ways, for example, as 11682724 + 362404 = 3418^2 + 602^2 .

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, 20051 + ... + 20642.

Almost surely, 2^12045128 is an apocalyptic number.

It is an amenable number.

12045128 is a deficient number, since it is larger than the sum of its proper divisors (11150452).

12045128 is a wasteful number, since it uses less digits than its factorization.

12045128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40736 (or 40732 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 12045128 is about 3470.6091684314. The cubic root of 12045128 is about 229.2294820789.

Adding to 12045128 its reverse (82154021), we get a palindrome (94199149).

The spelling of 12045128 in words is "twelve million, forty-five thousand, one hundred twenty-eight".