128945175 has 24 divisors (see below), whose sum is σ = 218152704. Its totient is φ = 67169760.

The previous prime is 128945161. The next prime is 128945177. The reversal of 128945175 is 571549821.

It is not a de Polignac number, because 128945175 - 2⁹ = 128944663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128945177) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16767 + ... + 23216.

It is an arithmetic number, because the mean of its divisors is an integer number (9089696).

Almost surely, 2^128945175 is an apocalyptic number.

128945175 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128945175 is a deficient number, since it is larger than the sum of its proper divisors (89207529).

128945175 is a wasteful number, since it uses less digits than its factorization.

128945175 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40039 (or 40034 counting only the distinct ones).

The product of its digits is 100800, while the sum is 42.

The square root of 128945175 is about 11355.4028990609. The cubic root of 128945175 is about 505.2058436079.

It can be divided in two parts, 1289 and 45175, that added together give a palindrome (46464).

The spelling of 128945175 in words is "one hundred twenty-eight million, nine hundred forty-five thousand, one hundred seventy-five".