128491203 has 8 divisors (see below), whose sum is σ = 174225600. Its totient is φ = 84208808.

The previous prime is 128491157. The next prime is 128491211. The reversal of 128491203 is 302194821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128491203 - 2¹⁷ = 128360131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128491273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362793 + ... + 363146.

It is an arithmetic number, because the mean of its divisors is an integer number (21778200).

Almost surely, 2^128491203 is an apocalyptic number.

128491203 is a deficient number, since it is larger than the sum of its proper divisors (45734397).

128491203 is an equidigital number, since it uses as much as digits as its factorization.

128491203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726001.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 128491203 is about 11335.3960230774. The cubic root of 128491203 is about 504.6122606155.

The spelling of 128491203 in words is "one hundred twenty-eight million, four hundred ninety-one thousand, two hundred three".