128459559 has 4 divisors (see below), whose sum is σ = 171279416. Its totient is φ = 85639704.

The previous prime is 128459549. The next prime is 128459561. The reversal of 128459559 is 955954821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 955954821 = 3 ⋅318651607.

It is not a de Polignac number, because 128459559 - 2⁹ = 128459047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128459509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21409924 + ... + 21409929.

It is an arithmetic number, because the mean of its divisors is an integer number (42819854).

Almost surely, 2^128459559 is an apocalyptic number.

128459559 is a deficient number, since it is larger than the sum of its proper divisors (42819857).

128459559 is an equidigital number, since it uses as much as digits as its factorization.

128459559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42819856.

The product of its digits is 648000, while the sum is 48.

The square root of 128459559 is about 11334.0001323452. Note that the first 3 decimals coincide. The cubic root of 128459559 is about 504.5708329769.

The spelling of 128459559 in words is "one hundred twenty-eight million, four hundred fifty-nine thousand, five hundred fifty-nine".