442144233444 has 24 divisors (see below), whose sum is σ = 1032600179520. Its totient is φ = 147248510944.

The previous prime is 442144233437. The next prime is 442144233449. The reversal of 442144233444 is 444332441244.

It is a happy number.

It is a super-2 number, since 2×442144233444² (a number of 24 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (442144233449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16598664 + ... + 16625279.

It is an arithmetic number, because the mean of its divisors is an integer number (43025007480).

Almost surely, 2^442144233444 is an apocalyptic number.

It is an amenable number.

442144233444 is an abundant number, since it is smaller than the sum of its proper divisors (590455946076).

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

442144233444 is a wasteful number, since it uses less digits than its factorization.

442144233444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33225059 (or 33225057 counting only the distinct ones).

The product of its digits is 589824, while the sum is 39.

Adding to 442144233444 its reverse (444332441244), we get a palindrome (886476674688).

The spelling of 442144233444 in words is "four hundred forty-two billion, one hundred forty-four million, two hundred thirty-three thousand, four hundred forty-four".