128084459 has 2 divisors, whose sum is σ = 128084460. Its totient is φ = 128084458.

The previous prime is 128084441. The next prime is 128084461. The reversal of 128084459 is 954480821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128084459 - 2¹⁶ = 128018923 is a prime.

Together with 128084461, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_7275569 and since 128084459 and 7275569 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (128084479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64042229 + 64042230.

It is an arithmetic number, because the mean of its divisors is an integer number (64042230).

Almost surely, 2^128084459 is an apocalyptic number.

128084459 is a deficient number, since it is larger than the sum of its proper divisors (1).

128084459 is an equidigital number, since it uses as much as digits as its factorization.

128084459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 128084459 is about 11317.4404791896. The cubic root of 128084459 is about 504.0792410786.

The spelling of 128084459 in words is "one hundred twenty-eight million, eighty-four thousand, four hundred fifty-nine".