128575803 has 4 divisors (see below), whose sum is σ = 171434408. Its totient is φ = 85717200.

The previous prime is 128575789. The next prime is 128575823. The reversal of 128575803 is 308575821.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 128575803 - 2⁴ = 128575787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128575823) 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 3 ways as a sum of consecutive naturals, for example, 21429298 + ... + 21429303.

It is an arithmetic number, because the mean of its divisors is an integer number (42858602).

Almost surely, 2^128575803 is an apocalyptic number.

128575803 is a deficient number, since it is larger than the sum of its proper divisors (42858605).

128575803 is an equidigital number, since it uses as much as digits as its factorization.

128575803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42858604.

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 128575803 is about 11339.1270828049. The cubic root of 128575803 is about 504.7229837116.

The spelling of 128575803 in words is "one hundred twenty-eight million, five hundred seventy-five thousand, eight hundred three".