442246512 has 40 divisors (see below), whose sum is σ = 1151481856. Its totient is φ = 146252736.

The previous prime is 442246499. The next prime is 442246513. The reversal of 442246512 is 215642244.

It is a super-2 number, since 2×442246512² = 391163954752332288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 442246512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442246513) 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 7 ways as a sum of consecutive naturals, for example, 30178 + ... + 42369.

Almost surely, 2^442246512 is an apocalyptic number.

It is an amenable number.

442246512 is an abundant number, since it is smaller than the sum of its proper divisors (709235344).

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

442246512 is a wasteful number, since it uses less digits than its factorization.

442246512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72685 (or 72679 counting only the distinct ones).

The product of its digits is 15360, while the sum is 30.

The square root of 442246512 is about 21029.6579144788. The cubic root of 442246512 is about 761.8827466129.

Adding to 442246512 its reverse (215642244), we get a palindrome (657888756).

The spelling of 442246512 in words is "four hundred forty-two million, two hundred forty-six thousand, five hundred twelve".