128166079 has 2 divisors, whose sum is σ = 128166080. Its totient is φ = 128166078.

The previous prime is 128166061. The next prime is 128166083. The reversal of 128166079 is 970661821.

It is a strong prime.

It is an emirp because it is prime and its reverse (970661821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128166079 - 2⁵ = 128166047 is a prime.

It is a Chen prime.

It is equal to p_7279933 and since 128166079 and 7279933 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128166019) 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, 64083039 + 64083040.

It is an arithmetic number, because the mean of its divisors is an integer number (64083040).

Almost surely, 2^128166079 is an apocalyptic number.

128166079 is a deficient number, since it is larger than the sum of its proper divisors (1).

128166079 is an equidigital number, since it uses as much as digits as its factorization.

128166079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 128166079 is about 11321.0458439139. The cubic root of 128166079 is about 504.1862907857.

The spelling of 128166079 in words is "one hundred twenty-eight million, one hundred sixty-six thousand, seventy-nine".