128189041 has 4 divisors (see below), whose sum is σ = 128796784. Its totient is φ = 127581300.

The previous prime is 128189011. The next prime is 128189059. The reversal of 128189041 is 140981821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 128189041 - 2²⁵ = 94634609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128188988 and 128189006.

It is not an unprimeable number, because it can be changed into a prime (128189011) 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 3 ways as a sum of consecutive naturals, for example, 303555 + ... + 303976.

It is an arithmetic number, because the mean of its divisors is an integer number (32199196).

Almost surely, 2^128189041 is an apocalyptic number.

It is an amenable number.

128189041 is a deficient number, since it is larger than the sum of its proper divisors (607743).

128189041 is an equidigital number, since it uses as much as digits as its factorization.

128189041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607742.

The product of its (nonzero) digits is 4608, while the sum is 34.

The square root of 128189041 is about 11322.0599274160. The cubic root of 128189041 is about 504.2163986853.

The spelling of 128189041 in words is "one hundred twenty-eight million, one hundred eighty-nine thousand, forty-one".