128659343 has 2 divisors, whose sum is σ = 128659344. Its totient is φ = 128659342.

The previous prime is 128659339. The next prime is 128659357. The reversal of 128659343 is 343956821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128659343 - 2² = 128659339 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128659343.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128659543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64329671 + 64329672.

It is an arithmetic number, because the mean of its divisors is an integer number (64329672).

Almost surely, 2^128659343 is an apocalyptic number.

128659343 is a deficient number, since it is larger than the sum of its proper divisors (1).

128659343 is an equidigital number, since it uses as much as digits as its factorization.

128659343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 41.

The square root of 128659343 is about 11342.8101897193. The cubic root of 128659343 is about 504.8322718474.

The spelling of 128659343 in words is "one hundred twenty-eight million, six hundred fifty-nine thousand, three hundred forty-three".