442712212 has 12 divisors (see below), whose sum is σ = 780402420. Its totient is φ = 219740096.

The previous prime is 442712167. The next prime is 442712239. The reversal of 442712212 is 212217244.

It can be written as a sum of positive squares in 2 ways, for example, as 250778896 + 191933316 = 15836^2 + 13854^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403387 + ... + 404482.

It is an arithmetic number, because the mean of its divisors is an integer number (65033535).

Almost surely, 2^442712212 is an apocalyptic number.

It is an amenable number.

442712212 is a deficient number, since it is larger than the sum of its proper divisors (337690208).

442712212 is a wasteful number, since it uses less digits than its factorization.

442712212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808010 (or 808008 counting only the distinct ones).

The product of its digits is 1792, while the sum is 25.

The square root of 442712212 is about 21040.7274589069. The cubic root of 442712212 is about 762.1500819236.

Adding to 442712212 its reverse (212217244), we get a palindrome (654929456).

The spelling of 442712212 in words is "four hundred forty-two million, seven hundred twelve thousand, two hundred twelve".