442221401242 has 8 divisors (see below), whose sum is σ = 663341418432. Its totient is φ = 221107595100.

The previous prime is 442221401239. The next prime is 442221401269. The reversal of 442221401242 is 242104122244.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 442221401242.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1370484 + ... + 1662127.

It is an arithmetic number, because the mean of its divisors is an integer number (82917677304).

Almost surely, 2^442221401242 is an apocalyptic number.

442221401242 is a deficient number, since it is larger than the sum of its proper divisors (221120017190).

442221401242 is a wasteful number, since it uses less digits than its factorization.

442221401242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3105524.

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 442221401242 its reverse (242104122244), we get a palindrome (684325523486).

The spelling of 442221401242 in words is "four hundred forty-two billion, two hundred twenty-one million, four hundred one thousand, two hundred forty-two".