440120042 has 16 divisors (see below), whose sum is σ = 690076800. Its totient is φ = 210127632.

The previous prime is 440120017. The next prime is 440120059. The reversal of 440120042 is 240021044.

It is a self number, because there is not a number n which added to its sum of digits gives 440120042.

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, 19568 + ... + 35540.

It is an arithmetic number, because the mean of its divisors is an integer number (43129800).

Almost surely, 2^440120042 is an apocalyptic number.

440120042 is a deficient number, since it is larger than the sum of its proper divisors (249956758).

440120042 is a wasteful number, since it uses less digits than its factorization.

440120042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16597.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 440120042 is about 20979.0381571701. The cubic root of 440120042 is about 760.6596546538.

Adding to 440120042 its reverse (240021044), we get a palindrome (680141086).

The spelling of 440120042 in words is "four hundred forty million, one hundred twenty thousand, forty-two".