442216140 has 24 divisors (see below), whose sum is σ = 1238205360. Its totient is φ = 117924288.

The previous prime is 442216109. The next prime is 442216207. The reversal of 442216140 is 41612244.

It is a happy number.

It is a super-2 number, since 2×442216140² = 391110228952999200, 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 442216140.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3685075 + ... + 3685194.

It is an arithmetic number, because the mean of its divisors is an integer number (51591890).

Almost surely, 2^442216140 is an apocalyptic number.

It is an amenable number.

442216140 is an abundant number, since it is smaller than the sum of its proper divisors (795989220).

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

442216140 is a wasteful number, since it uses less digits than its factorization.

442216140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7370281 (or 7370279 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 442216140 is about 21028.9357790640. The cubic root of 442216140 is about 761.8653050338.

Adding to 442216140 its reverse (41612244), we get a palindrome (483828384).

The spelling of 442216140 in words is "four hundred forty-two million, two hundred sixteen thousand, one hundred forty".