128116975 has 12 divisors (see below), whose sum is σ = 181560304. Its totient is φ = 87851520.

The previous prime is 128116957. The next prime is 128116979. The reversal of 128116975 is 579611821.

It is a happy number.

It is not a de Polignac number, because 128116975 - 2¹⁵ = 128084207 is a prime.

It is a super-3 number, since 3×128116975³ (a number of 25 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128116979) 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 11 ways as a sum of consecutive naturals, for example, 365874 + ... + 366223.

Almost surely, 2^128116975 is an apocalyptic number.

128116975 is a deficient number, since it is larger than the sum of its proper divisors (53443329).

128116975 is an equidigital number, since it uses as much as digits as its factorization.

128116975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732114 (or 732109 counting only the distinct ones).

The product of its digits is 30240, while the sum is 40.

The square root of 128116975 is about 11318.8769319222. The cubic root of 128116975 is about 504.1218932835.

The spelling of 128116975 in words is "one hundred twenty-eight million, one hundred sixteen thousand, nine hundred seventy-five".