128040303 has 4 divisors (see below), whose sum is σ = 170720408. Its totient is φ = 85360200.

The previous prime is 128040271. The next prime is 128040331. The reversal of 128040303 is 303040821.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 303040821 = 3 ⋅101013607.

It is not a de Polignac number, because 128040303 - 2⁵ = 128040271 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128040303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128040343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21340048 + ... + 21340053.

It is an arithmetic number, because the mean of its divisors is an integer number (42680102).

Almost surely, 2^128040303 is an apocalyptic number.

128040303 is a deficient number, since it is larger than the sum of its proper divisors (42680105).

128040303 is an equidigital number, since it uses as much as digits as its factorization.

128040303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42680104.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 128040303 is about 11315.4895165874. The cubic root of 128040303 is about 504.0213087803.

The spelling of 128040303 in words is "one hundred twenty-eight million, forty thousand, three hundred three".