128570329 has 2 divisors, whose sum is σ = 128570330. Its totient is φ = 128570328.

The previous prime is 128570327. The next prime is 128570353. The reversal of 128570329 is 923075821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128210329 + 360000 = 11323^2 + 600^2 .

It is a cyclic number.

It is not a de Polignac number, because 128570329 - 2¹ = 128570327 is a prime.

Together with 128570327, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (128570327) 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 as a sum of consecutive naturals, namely, 64285164 + 64285165.

It is an arithmetic number, because the mean of its divisors is an integer number (64285165).

Almost surely, 2^128570329 is an apocalyptic number.

It is an amenable number.

128570329 is a deficient number, since it is larger than the sum of its proper divisors (1).

128570329 is an equidigital number, since it uses as much as digits as its factorization.

128570329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 128570329 is about 11338.8857036307. The cubic root of 128570329 is about 504.7158208998.

The spelling of 128570329 in words is "one hundred twenty-eight million, five hundred seventy thousand, three hundred twenty-nine".