1145128 has 8 divisors (see below), whose sum is σ = 2147130. Its totient is φ = 572560.

The previous prime is 1145107. The next prime is 1145129. The reversal of 1145128 is 8215411.

It can be written as a sum of positive squares in only one way, i.e., 806404 + 338724 = 898^2 + 582^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1145128² = 2622636272768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1145099 and 1145108.

It is not an unprimeable number, because it can be changed into a prime (1145129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71563 + ... + 71578.

2^1145128 is an apocalyptic number.

It is an amenable number.

1145128 is a deficient number, since it is larger than the sum of its proper divisors (1002002).

1145128 is a wasteful number, since it uses less digits than its factorization.

1145128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143147 (or 143143 counting only the distinct ones).

The product of its digits is 320, while the sum is 22.

The square root of 1145128 is about 1070.1065367523. The cubic root of 1145128 is about 104.6207939045.

The spelling of 1145128 in words is "one million, one hundred forty-five thousand, one hundred twenty-eight".