442310021242 has 16 divisors (see below), whose sum is σ = 686951159400. Its totient is φ = 213339813120.

The previous prime is 442310021233. The next prime is 442310021249. The reversal of 442310021242 is 242120013244.

It can be written as a sum of positive squares in 4 ways, for example, as 283610567601 + 158699453641 = 532551^2 + 398371^2 .

It is not an unprimeable number, because it can be changed into a prime (442310021249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3311859 + ... + 3442822.

Almost surely, 2^442310021242 is an apocalyptic number.

442310021242 is a deficient number, since it is larger than the sum of its proper divisors (244641138158).

442310021242 is a wasteful number, since it uses less digits than its factorization.

442310021242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6755841.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 442310021242 its reverse (242120013244), we get a palindrome (684430034486).

The spelling of 442310021242 in words is "four hundred forty-two billion, three hundred ten million, twenty-one thousand, two hundred forty-two".