442420444042 has 4 divisors (see below), whose sum is σ = 663630666066. Its totient is φ = 221210222020.

The previous prime is 442420443953. The next prime is 442420444057. The reversal of 442420444042 is 240444024244.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 332097485841 + 110322958201 = 576279^2 + 332149^2 .

It is a junction number, because it is equal to n+sod(n) for n = 442420443989 and 442420444007.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110605111009 + ... + 110605111012.

Almost surely, 2^442420444042 is an apocalyptic number.

442420444042 is a deficient number, since it is larger than the sum of its proper divisors (221210222024).

442420444042 is a wasteful number, since it uses less digits than its factorization.

442420444042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221210222023.

The product of its (nonzero) digits is 131072, while the sum is 34.

Adding to 442420444042 its reverse (240444024244), we get a palindrome (682864468286).

The spelling of 442420444042 in words is "four hundred forty-two billion, four hundred twenty million, four hundred forty-four thousand, forty-two".