842220620 has 24 divisors (see below), whose sum is σ = 1780382688. Its totient is φ = 334656000.

The previous prime is 842220607. The next prime is 842220629. The reversal of 842220620 is 26022248.

It is a self number, because there is not a number n which added to its sum of digits gives 842220620.

It is not an unprimeable number, because it can be changed into a prime (842220629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136421 + ... + 142460.

It is an arithmetic number, because the mean of its divisors is an integer number (74182612).

Almost surely, 2^842220620 is an apocalyptic number.

It is an amenable number.

842220620 is an abundant number, since it is smaller than the sum of its proper divisors (938162068).

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

842220620 is a wasteful number, since it uses less digits than its factorization.

842220620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279041 (or 279039 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 842220620 is about 29021.0375417558. The cubic root of 842220620 is about 944.3695093590.

Adding to 842220620 its reverse (26022248), we get a palindrome (868242868).

The spelling of 842220620 in words is "eight hundred forty-two million, two hundred twenty thousand, six hundred twenty".