128259071 has 2 divisors, whose sum is σ = 128259072. Its totient is φ = 128259070.

The previous prime is 128259037. The next prime is 128259073. The reversal of 128259071 is 170952821.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128259071 is a prime.

Together with 128259073, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128259073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64129535 + 64129536.

It is an arithmetic number, because the mean of its divisors is an integer number (64129536).

Almost surely, 2^128259071 is an apocalyptic number.

128259071 is a deficient number, since it is larger than the sum of its proper divisors (1).

128259071 is an equidigital number, since it uses as much as digits as its factorization.

128259071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 128259071 is about 11325.1521402584. The cubic root of 128259071 is about 504.3082002050.

The spelling of 128259071 in words is "one hundred twenty-eight million, two hundred fifty-nine thousand, seventy-one".