128493259 has 8 divisors (see below), whose sum is σ = 137047248. Its totient is φ = 120049920.

The previous prime is 128493251. The next prime is 128493271. The reversal of 128493259 is 952394821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128493259 - 2³ = 128493251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128493251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25257 + ... + 29914.

It is an arithmetic number, because the mean of its divisors is an integer number (17130906).

Almost surely, 2^128493259 is an apocalyptic number.

128493259 is a deficient number, since it is larger than the sum of its proper divisors (8553989).

128493259 is a wasteful number, since it uses less digits than its factorization.

128493259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55325.

The product of its digits is 155520, while the sum is 43.

The square root of 128493259 is about 11335.4867120914. The cubic root of 128493259 is about 504.6149520508.

The spelling of 128493259 in words is "one hundred twenty-eight million, four hundred ninety-three thousand, two hundred fifty-nine".