128034117 has 12 divisors (see below), whose sum is σ = 185159104. Its totient is φ = 85254120.

The previous prime is 128034079. The next prime is 128034131. The reversal of 128034117 is 711430821.

It is not a de Polignac number, because 128034117 - 2¹⁴ = 128017733 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 (128034017) 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 11 ways as a sum of consecutive naturals, for example, 109 + ... + 16002.

Almost surely, 2^128034117 is an apocalyptic number.

It is an amenable number.

128034117 is a deficient number, since it is larger than the sum of its proper divisors (57124987).

128034117 is a wasteful number, since it uses less digits than its factorization.

128034117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17000 (or 16997 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 128034117 is about 11315.2161711564. The cubic root of 128034117 is about 504.0131917371.

Adding to 128034117 its reverse (711430821), we get a palindrome (839464938).

The spelling of 128034117 in words is "one hundred twenty-eight million, thirty-four thousand, one hundred seventeen".