128430271 has 2 divisors, whose sum is σ = 128430272. Its totient is φ = 128430270.

The previous prime is 128430259. The next prime is 128430307. The reversal of 128430271 is 172034821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128430271 - 2⁷ = 128430143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128430571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64215135 + 64215136.

It is an arithmetic number, because the mean of its divisors is an integer number (64215136).

Almost surely, 2^128430271 is an apocalyptic number.

128430271 is a deficient number, since it is larger than the sum of its proper divisors (1).

128430271 is an equidigital number, since it uses as much as digits as its factorization.

128430271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 128430271 is about 11332.7080170628. The cubic root of 128430271 is about 504.5324836995.

The spelling of 128430271 in words is "one hundred twenty-eight million, four hundred thirty thousand, two hundred seventy-one".