128082239 has 4 divisors (see below), whose sum is σ = 133651056. Its totient is φ = 122513424.

The previous prime is 128082187. The next prime is 128082263. The reversal of 128082239 is 932280821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128082239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128082199 and 128082208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128082289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2784374 + ... + 2784419.

It is an arithmetic number, because the mean of its divisors is an integer number (33412764).

Almost surely, 2^128082239 is an apocalyptic number.

128082239 is a deficient number, since it is larger than the sum of its proper divisors (5568817).

128082239 is an equidigital number, since it uses as much as digits as its factorization.

128082239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5568816.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 128082239 is about 11317.3424000513. The cubic root of 128082239 is about 504.0763287752.

The spelling of 128082239 in words is "one hundred twenty-eight million, eighty-two thousand, two hundred thirty-nine".