128943 has 6 divisors (see below), whose sum is σ = 186264. Its totient is φ = 85956.

The previous prime is 128941. The next prime is 128951. The reversal of 128943 is 349821.

It is not a de Polignac number, because 128943 - 2¹ = 128941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7155 + ... + 7172.

It is an arithmetic number, because the mean of its divisors is an integer number (31044).

128943 is a Friedman number, since it can be written as 42981*3, using all its digits and the basic arithmetic operations.

2¹²⁸⁹⁴³ is an apocalyptic number.

128943 is a deficient number, since it is larger than the sum of its proper divisors (57321).

128943 is a wasteful number, since it uses less digits than its factorization.

128943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14333 (or 14330 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 128943 is about 359.0863405923. The cubic root of 128943 is about 50.5203003050.

The spelling of 128943 in words is "one hundred twenty-eight thousand, nine hundred forty-three".