1128543 has 16 divisors (see below), whose sum is σ = 1706880. Its totient is φ = 657504.

The previous prime is 1128539. The next prime is 1128553. The reversal of 1128543 is 3458211.

It is not a de Polignac number, because 1128543 - 2² = 1128539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128503) 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 in 15 ways as a sum of consecutive naturals, for example, 21 + ... + 1502.

It is an arithmetic number, because the mean of its divisors is an integer number (106680).

2^1128543 is an apocalyptic number.

1128543 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1128543 is a deficient number, since it is larger than the sum of its proper divisors (578337).

1128543 is a wasteful number, since it uses less digits than its factorization.

1128543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558.

The product of its digits is 960, while the sum is 24.

The square root of 1128543 is about 1062.3290450703. The cubic root of 1128543 is about 104.1132580253.

The spelling of 1128543 in words is "one million, one hundred twenty-eight thousand, five hundred forty-three".