128430943 has 2 divisors, whose sum is σ = 128430944. Its totient is φ = 128430942.

The previous prime is 128430859. The next prime is 128430947. The reversal of 128430943 is 349034821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128430943 - 2⁹ = 128430431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128430899 and 128430908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128430947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64215471 + 64215472.

It is an arithmetic number, because the mean of its divisors is an integer number (64215472).

Almost surely, 2^128430943 is an apocalyptic number.

128430943 is a deficient number, since it is larger than the sum of its proper divisors (1).

128430943 is an equidigital number, since it uses as much as digits as its factorization.

128430943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 128430943 is about 11332.7376657187. The cubic root of 128430943 is about 504.5333636718.

The spelling of 128430943 in words is "one hundred twenty-eight million, four hundred thirty thousand, nine hundred forty-three".