442243012 has 12 divisors (see below), whose sum is σ = 814658320. Its totient is φ = 209483496.

The previous prime is 442243001. The next prime is 442243019. The reversal of 442243012 is 210342244.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (442243019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2909418 + ... + 2909569.

Almost surely, 2^442243012 is an apocalyptic number.

It is an amenable number.

442243012 is a deficient number, since it is larger than the sum of its proper divisors (372415308).

442243012 is a wasteful number, since it uses less digits than its factorization.

442243012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5819010 (or 5819008 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 442243012 is about 21029.5746985050. The cubic root of 442243012 is about 761.8807367258.

Adding to 442243012 its reverse (210342244), we get a palindrome (652585256).

The spelling of 442243012 in words is "four hundred forty-two million, two hundred forty-three thousand, twelve".