1128943 has 2 divisors, whose sum is σ = 1128944. Its totient is φ = 1128942.

The previous prime is 1128937. The next prime is 1128947. The reversal of 1128943 is 3498211.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (3498211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1128943 is a prime.

It is an Ulam number.

1128943 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1128947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564471 + 564472.

It is an arithmetic number, because the mean of its divisors is an integer number (564472).

2^1128943 is an apocalyptic number.

1128943 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128943 is an equidigital number, since it uses as much as digits as its factorization.

1128943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 28.

The square root of 1128943 is about 1062.5172939769. The cubic root of 1128943 is about 104.1255571827.

The spelling of 1128943 in words is "one million, one hundred twenty-eight thousand, nine hundred forty-three".