128055901 has 8 divisors (see below), whose sum is σ = 130723200. Its totient is φ = 125405280.

The previous prime is 128055899. The next prime is 128055911. The reversal of 128055901 is 109550821.

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 128055901 - 2¹ = 128055899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128055911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11985 + ... + 19993.

It is an arithmetic number, because the mean of its divisors is an integer number (16340400).

Almost surely, 2^128055901 is an apocalyptic number.

It is an amenable number.

128055901 is a deficient number, since it is larger than the sum of its proper divisors (2667299).

128055901 is an equidigital number, since it uses as much as digits as its factorization.

128055901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8339.

The product of its (nonzero) digits is 3600, while the sum is 31.

The square root of 128055901 is about 11316.1787278215. The cubic root of 128055901 is about 504.0417747455.

The spelling of 128055901 in words is "one hundred twenty-eight million, fifty-five thousand, nine hundred one".