128367671 has 2 divisors, whose sum is σ = 128367672. Its totient is φ = 128367670.

The previous prime is 128367647. The next prime is 128367691. The reversal of 128367671 is 176763821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128367671 - 2²² = 124173367 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128367691) 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, 64183835 + 64183836.

It is an arithmetic number, because the mean of its divisors is an integer number (64183836).

Almost surely, 2^128367671 is an apocalyptic number.

128367671 is a deficient number, since it is larger than the sum of its proper divisors (1).

128367671 is an equidigital number, since it uses as much as digits as its factorization.

128367671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 41.

The square root of 128367671 is about 11329.9457633300. The cubic root of 128367671 is about 504.4504966254.

The spelling of 128367671 in words is "one hundred twenty-eight million, three hundred sixty-seven thousand, six hundred seventy-one".