442531222 has 16 divisors (see below), whose sum is σ = 760614912. Its totient is φ = 189158760.

The previous prime is 442531207. The next prime is 442531237. The reversal of 442531222 is 222135244.

It is an interprime number because it is at equal distance from previous prime (442531207) and next prime (442531237).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35904 + ... + 46627.

It is an arithmetic number, because the mean of its divisors is an integer number (47538432).

Almost surely, 2^442531222 is an apocalyptic number.

442531222 is a deficient number, since it is larger than the sum of its proper divisors (318083690).

442531222 is a wasteful number, since it uses less digits than its factorization.

442531222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82923.

The product of its digits is 3840, while the sum is 25.

The square root of 442531222 is about 21036.4260747875. The cubic root of 442531222 is about 762.0462068090.

Adding to 442531222 its reverse (222135244), we get a palindrome (664666466).

The spelling of 442531222 in words is "four hundred forty-two million, five hundred thirty-one thousand, two hundred twenty-two".