128442322 has 8 divisors (see below), whose sum is σ = 192856716. Its totient is φ = 64156752.

The previous prime is 128442319. The next prime is 128442329. The reversal of 128442322 is 223244821.

It can be written as a sum of positive squares in 2 ways, for example, as 105698961 + 22743361 = 10281^2 + 4769^2 .

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

It is not an unprimeable number, because it can be changed into a prime (128442329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29673 + ... + 33724.

Almost surely, 2^128442322 is an apocalyptic number.

128442322 is a deficient number, since it is larger than the sum of its proper divisors (64414394).

128442322 is a wasteful number, since it uses less digits than its factorization.

128442322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64412.

The product of its digits is 6144, while the sum is 28.

The square root of 128442322 is about 11333.2396956916. The cubic root of 128442322 is about 504.5482638079.

The spelling of 128442322 in words is "one hundred twenty-eight million, four hundred forty-two thousand, three hundred twenty-two".