128044117 has 8 divisors (see below), whose sum is σ = 130386816. Its totient is φ = 125717472.

The previous prime is 128044073. The next prime is 128044123. The reversal of 128044117 is 711440821.

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 128044117 - 2⁷ = 128043989 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 (128044157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12708 + ... + 20434.

It is an arithmetic number, because the mean of its divisors is an integer number (16298352).

Almost surely, 2^128044117 is an apocalyptic number.

It is an amenable number.

128044117 is a deficient number, since it is larger than the sum of its proper divisors (2342699).

128044117 is an equidigital number, since it uses as much as digits as its factorization.

128044117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8027.

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 128044117 is about 11315.6580453812. The cubic root of 128044117 is about 504.0263132415.

Adding to 128044117 its reverse (711440821), we get a palindrome (839484938).

The spelling of 128044117 in words is "one hundred twenty-eight million, forty-four thousand, one hundred seventeen".