128944042 has 8 divisors (see below), whose sum is σ = 193615776. Its totient is φ = 64405452.

The previous prime is 128944027. The next prime is 128944093. The reversal of 128944042 is 240449821.

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

It is a junction number, because it is equal to n+sod(n) for n = 128943989 and 128944007.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 30828 + ... + 34759.

It is an arithmetic number, because the mean of its divisors is an integer number (24201972).

Almost surely, 2^128944042 is an apocalyptic number.

128944042 is a deficient number, since it is larger than the sum of its proper divisors (64671734).

128944042 is an equidigital number, since it uses as much as digits as its factorization.

128944042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66572.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 128944042 is about 11355.3530108051. The cubic root of 128944042 is about 505.2043639095.

The spelling of 128944042 in words is "one hundred twenty-eight million, nine hundred forty-four thousand, forty-two".