442042012 has 12 divisors (see below), whose sum is σ = 800248680. Its totient is φ = 213399536.

The previous prime is 442042009. The next prime is 442042031. The reversal of 442042012 is 210240244.

It is a super-2 number, since 2×442042012² = 390802280746016288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1905238 + ... + 1905469.

It is an arithmetic number, because the mean of its divisors is an integer number (66687390).

Almost surely, 2^442042012 is an apocalyptic number.

It is an amenable number.

442042012 is a deficient number, since it is larger than the sum of its proper divisors (358206668).

442042012 is a wasteful number, since it uses less digits than its factorization.

442042012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3810740 (or 3810738 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 442042012 is about 21024.7951714161. The cubic root of 442042012 is about 761.7652939864.

Adding to 442042012 its reverse (210240244), we get a palindrome (652282256).

The spelling of 442042012 in words is "four hundred forty-two million, forty-two thousand, twelve".