842447218 has 8 divisors (see below), whose sum is σ = 1263841920. Its totient is φ = 421166580.

The previous prime is 842447173. The next prime is 842447219. The reversal of 842447218 is 812744248.

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

It is not an unprimeable number, because it can be changed into a prime (842447219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6718 + ... + 41593.

It is an arithmetic number, because the mean of its divisors is an integer number (157980240).

Almost surely, 2^842447218 is an apocalyptic number.

842447218 is a deficient number, since it is larger than the sum of its proper divisors (421394702).

842447218 is a wasteful number, since it uses less digits than its factorization.

842447218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57032.

The product of its digits is 114688, while the sum is 40.

The square root of 842447218 is about 29024.9413091569. The cubic root of 842447218 is about 944.4541954251.

The spelling of 842447218 in words is "eight hundred forty-two million, four hundred forty-seven thousand, two hundred eighteen".