128966371 has 2 divisors, whose sum is σ = 128966372. Its totient is φ = 128966370.

The previous prime is 128966353. The next prime is 128966407. The reversal of 128966371 is 173669821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128966371 - 2²³ = 120577763 is a prime.

It is not a weakly prime, because it can be changed into another prime (128966671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64483185 + 64483186.

It is an arithmetic number, because the mean of its divisors is an integer number (64483186).

Almost surely, 2^128966371 is an apocalyptic number.

128966371 is a deficient number, since it is larger than the sum of its proper divisors (1).

128966371 is an equidigital number, since it uses as much as digits as its factorization.

128966371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The square root of 128966371 is about 11356.3361609280. The cubic root of 128966371 is about 505.2335239932.

The spelling of 128966371 in words is "one hundred twenty-eight million, nine hundred sixty-six thousand, three hundred seventy-one".