442121213242 has 8 divisors (see below), whose sum is σ = 663194520000. Its totient is φ = 221056373244.

The previous prime is 442121213207. The next prime is 442121213273. The reversal of 442121213242 is 242312121244.

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 442121213242.

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, 1984492 + ... + 2196007.

It is an arithmetic number, because the mean of its divisors is an integer number (82899315000).

Almost surely, 2^442121213242 is an apocalyptic number.

442121213242 is a deficient number, since it is larger than the sum of its proper divisors (221073306758).

442121213242 is a wasteful number, since it uses less digits than its factorization.

442121213242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4233380.

The product of its digits is 6144, while the sum is 28.

Adding to 442121213242 its reverse (242312121244), we get a palindrome (684433334486).

The spelling of 442121213242 in words is "four hundred forty-two billion, one hundred twenty-one million, two hundred thirteen thousand, two hundred forty-two".