128330459 has 2 divisors, whose sum is σ = 128330460. Its totient is φ = 128330458.

The previous prime is 128330407. The next prime is 128330473. The reversal of 128330459 is 954033821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128330459 - 2¹⁶ = 128264923 is a prime.

It is not a weakly prime, because it can be changed into another prime (128330659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64165229 + 64165230.

It is an arithmetic number, because the mean of its divisors is an integer number (64165230).

Almost surely, 2^128330459 is an apocalyptic number.

128330459 is a deficient number, since it is larger than the sum of its proper divisors (1).

128330459 is an equidigital number, since it uses as much as digits as its factorization.

128330459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 128330459 is about 11328.3034475600. The cubic root of 128330459 is about 504.4017475234.

The spelling of 128330459 in words is "one hundred twenty-eight million, three hundred thirty thousand, four hundred fifty-nine".