442042212 has 12 divisors (see below), whose sum is σ = 1031431856. Its totient is φ = 147347400.

The previous prime is 442042199. The next prime is 442042213. The reversal of 442042212 is 212240244.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (442042213) 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 3 ways as a sum of consecutive naturals, for example, 18418414 + ... + 18418437.

Almost surely, 2^442042212 is an apocalyptic number.

It is an amenable number.

442042212 is an abundant number, since it is smaller than the sum of its proper divisors (589389644).

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

442042212 is a wasteful number, since it uses less digits than its factorization.

442042212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36836858 (or 36836856 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 442042212 is about 21024.7999277044. The cubic root of 442042212 is about 761.7654088721.

Adding to 442042212 its reverse (212240244), we get a palindrome (654282456).

The spelling of 442042212 in words is "four hundred forty-two million, forty-two thousand, two hundred twelve".