442394842 has 12 divisors (see below), whose sum is σ = 704924190. Its totient is φ = 208185536.

The previous prime is 442394839. The next prime is 442394851. The reversal of 442394842 is 248493244.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 418570681 + 23824161 = 20459^2 + 4881^2 .

It is a junction number, because it is equal to n+sod(n) for n = 442394795 and 442394804.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 382117 + ... + 383272.

Almost surely, 2^442394842 is an apocalyptic number.

442394842 is a deficient number, since it is larger than the sum of its proper divisors (262529348).

442394842 is a wasteful number, since it uses less digits than its factorization.

442394842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765425 (or 765408 counting only the distinct ones).

The product of its digits is 221184, while the sum is 40.

The square root of 442394842 is about 21033.1843048075. The cubic root of 442394842 is about 761.9679158812.

The spelling of 442394842 in words is "four hundred forty-two million, three hundred ninety-four thousand, eight hundred forty-two".