842224220 has 12 divisors (see below), whose sum is σ = 1768670904. Its totient is φ = 336889680.

The previous prime is 842224199. The next prime is 842224291. The reversal of 842224220 is 22422248.

It is a self number, because there is not a number n which added to its sum of digits gives 842224220.

It is a congruent number.

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, 21055586 + ... + 21055625.

It is an arithmetic number, because the mean of its divisors is an integer number (147389242).

Almost surely, 2^842224220 is an apocalyptic number.

It is an amenable number.

842224220 is an abundant number, since it is smaller than the sum of its proper divisors (926446684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

842224220 is a wasteful number, since it uses less digits than its factorization.

842224220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42111220 (or 42111218 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

The square root of 842224220 is about 29021.0995656608. The cubic root of 842224220 is about 944.3708548993.

Adding to 842224220 its reverse (22422248), we get a palindrome (864646468).

The spelling of 842224220 in words is "eight hundred forty-two million, two hundred twenty-four thousand, two hundred twenty".