1128143 has 2 divisors, whose sum is σ = 1128144. Its totient is φ = 1128142.

The previous prime is 1128109. The next prime is 1128151. The reversal of 1128143 is 3418211.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1128143 is a prime.

It is a Chen prime.

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 (1128643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564071 + 564072.

It is an arithmetic number, because the mean of its divisors is an integer number (564072).

2^1128143 is an apocalyptic number.

1128143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128143 is an equidigital number, since it uses as much as digits as its factorization.

1128143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 20.

The square root of 1128143 is about 1062.1407627994. The cubic root of 1128143 is about 104.1009559614.

The spelling of 1128143 in words is "one million, one hundred twenty-eight thousand, one hundred forty-three".