128591241 has 8 divisors (see below), whose sum is σ = 171593760. Its totient is φ = 85658112.

The previous prime is 128591231. The next prime is 128591279. The reversal of 128591241 is 142195821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128591241 - 2¹¹ = 128589193 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (128591231) 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 7 ways as a sum of consecutive naturals, for example, 12856 + ... + 20553.

It is an arithmetic number, because the mean of its divisors is an integer number (21449220).

Almost surely, 2^128591241 is an apocalyptic number.

It is an amenable number.

128591241 is a deficient number, since it is larger than the sum of its proper divisors (43002519).

128591241 is a wasteful number, since it uses less digits than its factorization.

128591241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34695.

The product of its digits is 5760, while the sum is 33.

The square root of 128591241 is about 11339.8078026041. The cubic root of 128591241 is about 504.7431834729.

The spelling of 128591241 in words is "one hundred twenty-eight million, five hundred ninety-one thousand, two hundred forty-one".