442140244 has 24 divisors (see below), whose sum is σ = 952302848. Its totient is φ = 174912480.

The previous prime is 442140173. The next prime is 442140311. The reversal of 442140244 is 442041244.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 606972 + ... + 607699.

Almost surely, 2^442140244 is an apocalyptic number.

It is an amenable number.

442140244 is an abundant number, since it is smaller than the sum of its proper divisors (510162604).

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

442140244 is a wasteful number, since it uses less digits than its factorization.

442140244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214695 (or 1214693 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

The square root of 442140244 is about 21027.1311405051. The cubic root of 442140244 is about 761.8217171196.

Adding to 442140244 its reverse (442041244), we get a palindrome (884181488).

The spelling of 442140244 in words is "four hundred forty-two million, one hundred forty thousand, two hundred forty-four".