128833242 has 16 divisors (see below), whose sum is σ = 272823552. Its totient is φ = 40418240.

The previous prime is 128833219. The next prime is 128833261. The reversal of 128833242 is 242338821.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 631434 + ... + 631637.

It is an arithmetic number, because the mean of its divisors is an integer number (17051472).

Almost surely, 2^128833242 is an apocalyptic number.

128833242 is an abundant number, since it is smaller than the sum of its proper divisors (143990310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128833242 is a wasteful number, since it uses less digits than its factorization.

128833242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263093.

The product of its digits is 18432, while the sum is 33.

The square root of 128833242 is about 11350.4732059945. The cubic root of 128833242 is about 505.0596171815.

The spelling of 128833242 in words is "one hundred twenty-eight million, eight hundred thirty-three thousand, two hundred forty-two".