128432803 has 4 divisors (see below), whose sum is σ = 129356920. Its totient is φ = 127508688.

The previous prime is 128432767. The next prime is 128432819. The reversal of 128432803 is 308234821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 308234821 = 59 ⋅5224319.

It is a cyclic number.

It is not a de Polignac number, because 128432803 - 2¹⁷ = 128301731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128432893) 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, 461850 + ... + 462127.

It is an arithmetic number, because the mean of its divisors is an integer number (32339230).

Almost surely, 2^128432803 is an apocalyptic number.

128432803 is a deficient number, since it is larger than the sum of its proper divisors (924117).

128432803 is an equidigital number, since it uses as much as digits as its factorization.

128432803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924116.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 128432803 is about 11332.8197285583. The cubic root of 128432803 is about 504.5357992933.

The spelling of 128432803 in words is "one hundred twenty-eight million, four hundred thirty-two thousand, eight hundred three".