1128105 has 48 divisors (see below), whose sum is σ = 2223936. Its totient is φ = 524160.

The previous prime is 1128091. The next prime is 1128107. The reversal of 1128105 is 5018211.

It is not a de Polignac number, because 1128105 - 2⁴ = 1128089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1128107) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21259 + ... + 21311.

It is an arithmetic number, because the mean of its divisors is an integer number (46332).

2^1128105 is an apocalyptic number.

1128105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1128105 is a deficient number, since it is larger than the sum of its proper divisors (1095831).

1128105 is a wasteful number, since it uses less digits than its factorization.

1128105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 1128105 is about 1062.1228742476. The cubic root of 1128105 is about 104.0997871140.

The spelling of 1128105 in words is "one million, one hundred twenty-eight thousand, one hundred five".