128041171 has 4 divisors (see below), whose sum is σ = 134780200. Its totient is φ = 121302144.

The previous prime is 128041157. The next prime is 128041183. The reversal of 128041171 is 171140821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 128041171 - 2⁵ = 128041139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128041141) 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 in 3 ways as a sum of consecutive naturals, for example, 3369486 + ... + 3369523.

It is an arithmetic number, because the mean of its divisors is an integer number (33695050).

Almost surely, 2^128041171 is an apocalyptic number.

128041171 is a deficient number, since it is larger than the sum of its proper divisors (6739029).

128041171 is an equidigital number, since it uses as much as digits as its factorization.

128041171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6739028.

The product of its (nonzero) digits is 448, while the sum is 25.

The square root of 128041171 is about 11315.5278710275. The cubic root of 128041171 is about 504.0224477173.

Adding to 128041171 its reverse (171140821), we get a palindrome (299181992).

The spelling of 128041171 in words is "one hundred twenty-eight million, forty-one thousand, one hundred seventy-one".