128872559 has 2 divisors, whose sum is σ = 128872560. Its totient is φ = 128872558.

The previous prime is 128872547. The next prime is 128872561. The reversal of 128872559 is 955278821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128872559 - 2²⁴ = 112095343 is a prime.

Together with 128872561, 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 (128872589) 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, 64436279 + 64436280.

It is an arithmetic number, because the mean of its divisors is an integer number (64436280).

Almost surely, 2^128872559 is an apocalyptic number.

128872559 is a deficient number, since it is larger than the sum of its proper divisors (1).

128872559 is an equidigital number, since it uses as much as digits as its factorization.

128872559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 403200, while the sum is 47.

The square root of 128872559 is about 11352.2050280992. The cubic root of 128872559 is about 505.1109895577.

The spelling of 128872559 in words is "one hundred twenty-eight million, eight hundred seventy-two thousand, five hundred fifty-nine".