128055 has 8 divisors (see below), whose sum is σ = 204912. Its totient is φ = 68288.

The previous prime is 128053. The next prime is 128099. The reversal of 128055 is 550821.

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

It is a cyclic number.

It is not a de Polignac number, because 128055 - 2¹ = 128053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128053) 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, 4254 + ... + 4283.

It is an arithmetic number, because the mean of its divisors is an integer number (25614).

2¹²⁸⁰⁵⁵ is an apocalyptic number.

128055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128055 is a deficient number, since it is larger than the sum of its proper divisors (76857).

128055 is an equidigital number, since it uses as much as digits as its factorization.

128055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8545.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 128055 is about 357.8477329815. The cubic root of 128055 is about 50.4040592599.

Adding to 128055 its reverse (550821), we get a palindrome (678876).

The spelling of 128055 in words is "one hundred twenty-eight thousand, fifty-five".