128019075 has 24 divisors (see below), whose sum is σ = 217383408. Its totient is φ = 66430080.

The previous prime is 128019029. The next prime is 128019077. The reversal of 128019075 is 570910821.

It is not a de Polignac number, because 128019075 - 2⁶ = 128019011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128019077) 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 23 ways as a sum of consecutive naturals, for example, 20292 + ... + 25841.

It is an arithmetic number, because the mean of its divisors is an integer number (9057642).

Almost surely, 2^128019075 is an apocalyptic number.

128019075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128019075 is a deficient number, since it is larger than the sum of its proper divisors (89364333).

128019075 is a wasteful number, since it uses less digits than its factorization.

128019075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46183 (or 46178 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 128019075 is about 11314.5514714460. The cubic root of 128019075 is about 503.9934530833.

Adding to 128019075 its reverse (570910821), we get a palindrome (698929896).

The spelling of 128019075 in words is "one hundred twenty-eight million, nineteen thousand, seventy-five".