128822242 has 16 divisors (see below), whose sum is σ = 204480000. Its totient is φ = 60698160.

The previous prime is 128822237. The next prime is 128822251. The reversal of 128822242 is 242228821.

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 7 ways as a sum of consecutive naturals, for example, 1617 + ... + 16132.

It is an arithmetic number, because the mean of its divisors is an integer number (12780000).

Almost surely, 2^128822242 is an apocalyptic number.

128822242 is a deficient number, since it is larger than the sum of its proper divisors (75657758).

128822242 is a wasteful number, since it uses less digits than its factorization.

128822242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17961.

The product of its digits is 8192, while the sum is 31.

The square root of 128822242 is about 11349.9886343555. The cubic root of 128822242 is about 505.0452424911.

The spelling of 128822242 in words is "one hundred twenty-eight million, eight hundred twenty-two thousand, two hundred forty-two".