442218706 has 8 divisors (see below), whose sum is σ = 663433344. Its totient is φ = 221074260.

The previous prime is 442218649. The next prime is 442218719. The reversal of 442218706 is 607812244.

It is a happy number.

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

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, 3031 + ... + 29893.

It is an arithmetic number, because the mean of its divisors is an integer number (82929168).

Almost surely, 2^442218706 is an apocalyptic number.

442218706 is a deficient number, since it is larger than the sum of its proper divisors (221214638).

442218706 is a wasteful number, since it uses less digits than its factorization.

442218706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35096.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 442218706 is about 21028.9967901467. The cubic root of 442218706 is about 761.8667786289.

The spelling of 442218706 in words is "four hundred forty-two million, two hundred eighteen thousand, seven hundred six".