12128132 has 6 divisors (see below), whose sum is σ = 21224238. Its totient is φ = 6064064.

The previous prime is 12128131. The next prime is 12128141. The reversal of 12128132 is 23182121.

It can be written as a sum of positive squares in only one way, i.e., 8031556 + 4096576 = 2834^2 + 2024^2 .

It is not an unprimeable number, because it can be changed into a prime (12128131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1516013 + ... + 1516020.

It is an arithmetic number, because the mean of its divisors is an integer number (3537373).

Almost surely, 2^12128132 is an apocalyptic number.

It is an amenable number.

12128132 is a deficient number, since it is larger than the sum of its proper divisors (9096106).

12128132 is a wasteful number, since it uses less digits than its factorization.

12128132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3032037 (or 3032035 counting only the distinct ones).

The product of its digits is 192, while the sum is 20.

The square root of 12128132 is about 3482.5467692480. The cubic root of 12128132 is about 229.7548238053.

The spelling of 12128132 in words is "twelve million, one hundred twenty-eight thousand, one hundred thirty-two".