128370039 has 32 divisors (see below), whose sum is σ = 202911744. Its totient is φ = 70640640.

The previous prime is 128370031. The next prime is 128370049. The reversal of 128370039 is 930073821.

It is not a de Polignac number, because 128370039 - 2³ = 128370031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128369991 and 128370009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128370031) 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 31 ways as a sum of consecutive naturals, for example, 190407 + ... + 191079.

It is an arithmetic number, because the mean of its divisors is an integer number (6340992).

Almost surely, 2^128370039 is an apocalyptic number.

128370039 is a deficient number, since it is larger than the sum of its proper divisors (74541705).

128370039 is a wasteful number, since it uses less digits than its factorization.

128370039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 128370039 is about 11330.0502646723. The cubic root of 128370039 is about 504.4535984745.

The spelling of 128370039 in words is "one hundred twenty-eight million, three hundred seventy thousand, thirty-nine".