128050903 has 4 divisors (see below), whose sum is σ = 128245288. Its totient is φ = 127856520.

The previous prime is 128050891. The next prime is 128050957. The reversal of 128050903 is 309050821.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128050903 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 (128050963) 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, 96201 + ... + 97522.

It is an arithmetic number, because the mean of its divisors is an integer number (32061322).

Almost surely, 2^128050903 is an apocalyptic number.

128050903 is a deficient number, since it is larger than the sum of its proper divisors (194385).

128050903 is an equidigital number, since it uses as much as digits as its factorization.

128050903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194384.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 128050903 is about 11315.9578914027. The cubic root of 128050903 is about 504.0352171054.

The spelling of 128050903 in words is "one hundred twenty-eight million, fifty thousand, nine hundred three".