442143344 has 60 divisors (see below), whose sum is σ = 930668112. Its totient is φ = 202782720.

The previous prime is 442143307. The next prime is 442143347. The reversal of 442143344 is 443341244.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442143347) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 456749 + ... + 457715.

Almost surely, 2^442143344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 442143344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (465334056).

442143344 is an abundant number, since it is smaller than the sum of its proper divisors (488524768).

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

442143344 is a wasteful number, since it uses less digits than its factorization.

442143344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074 (or 1027 counting only the distinct ones).

The product of its digits is 18432, while the sum is 29.

The square root of 442143344 is about 21027.2048546639. The cubic root of 442143344 is about 761.8234975817.

Adding to 442143344 its reverse (443341244), we get a palindrome (885484588).

The spelling of 442143344 in words is "four hundred forty-two million, one hundred forty-three thousand, three hundred forty-four".