1125128 has 16 divisors (see below), whose sum is σ = 2233980. Its totient is φ = 529408.

The previous prime is 1125127. The next prime is 1125139. The reversal of 1125128 is 8215211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1036324 + 88804 = 1018^2 + 298^2 .

It is not an unprimeable number, because it can be changed into a prime (1125121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4001 + ... + 4272.

2^1125128 is an apocalyptic number.

It is an amenable number.

1125128 is a deficient number, since it is larger than the sum of its proper divisors (1108852).

1125128 is a wasteful number, since it uses less digits than its factorization.

1125128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8296 (or 8292 counting only the distinct ones).

The product of its digits is 160, while the sum is 20.

The square root of 1125128 is about 1060.7205098422. The cubic root of 1125128 is about 104.0081354583.

The spelling of 1125128 in words is "one million, one hundred twenty-five thousand, one hundred twenty-eight".