128547271 has 2 divisors, whose sum is σ = 128547272. Its totient is φ = 128547270.

The previous prime is 128547269. The next prime is 128547281. The reversal of 128547271 is 172745821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128547271 - 2¹ = 128547269 is a prime.

Together with 128547269, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128547271.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128547281) 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, 64273635 + 64273636.

It is an arithmetic number, because the mean of its divisors is an integer number (64273636).

Almost surely, 2^128547271 is an apocalyptic number.

128547271 is a deficient number, since it is larger than the sum of its proper divisors (1).

128547271 is an equidigital number, since it uses as much as digits as its factorization.

128547271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31360, while the sum is 37.

The square root of 128547271 is about 11337.8688914628. The cubic root of 128547271 is about 504.6856469261.

The spelling of 128547271 in words is "one hundred twenty-eight million, five hundred forty-seven thousand, two hundred seventy-one".