43128 has 24 divisors (see below), whose sum is σ = 117000. Its totient is φ = 14352.

The previous prime is 43117. The next prime is 43133. The reversal of 43128 is 82134.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is one of the 548 Lynch-Bell numbers.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 43128.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 228 + ... + 371.

It is an arithmetic number, because the mean of its divisors is an integer number (4875).

2⁴³¹²⁸ is an apocalyptic number.

It is an amenable number.

43128 is an abundant number, since it is smaller than the sum of its proper divisors (73872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43128 is a wasteful number, since it uses less digits than its factorization.

43128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611 (or 604 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 43128 is about 207.6728195985. The cubic root of 43128 is about 35.0687085672.

It can be divided in two parts, 43 and 128, that added together give a palindrome (171).

The spelling of 43128 in words is "forty-three thousand, one hundred twenty-eight".