128841 has 8 divisors (see below), whose sum is σ = 174624. Its totient is φ = 84480.

The previous prime is 128837. The next prime is 128857. The reversal of 128841 is 148821.

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

It is not a de Polignac number, because 128841 - 2² = 128837 is a prime.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128831) 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 7 ways as a sum of consecutive naturals, for example, 120 + ... + 521.

It is an arithmetic number, because the mean of its divisors is an integer number (21828).

2¹²⁸⁸⁴¹ is an apocalyptic number.

It is an amenable number.

128841 is a deficient number, since it is larger than the sum of its proper divisors (45783).

128841 is an equidigital number, since it uses as much as digits as its factorization.

128841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711.

The product of its digits is 512, while the sum is 24.

The square root of 128841 is about 358.9442853703. The cubic root of 128841 is about 50.5069754767.

It can be divided in two parts, 128 and 841, that added together give a palindrome (969).

The spelling of 128841 in words is "one hundred twenty-eight thousand, eight hundred forty-one".