128301239 has 16 divisors (see below), whose sum is σ = 143669376. Its totient is φ = 113589600.

The previous prime is 128301233. The next prime is 128301241. The reversal of 128301239 is 932103821.

It is a cyclic number.

It is not a de Polignac number, because 128301239 - 2¹⁶ = 128235703 is a prime.

It is a super-2 number, since 2×128301239² = 32922415857870242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128301233) 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 in 15 ways as a sum of consecutive naturals, for example, 70904 + ... + 72690.

It is an arithmetic number, because the mean of its divisors is an integer number (8979336).

Almost surely, 2^128301239 is an apocalyptic number.

128301239 is a deficient number, since it is larger than the sum of its proper divisors (15368137).

128301239 is a wasteful number, since it uses less digits than its factorization.

128301239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 128301239 is about 11327.0136841093. The cubic root of 128301239 is about 504.3634616326.

The spelling of 128301239 in words is "one hundred twenty-eight million, three hundred one thousand, two hundred thirty-nine".