842268728220 has 48 divisors (see below), whose sum is σ = 2358394086048. Its totient is φ = 224601027840.

The previous prime is 842268728207. The next prime is 842268728227. The reversal of 842268728220 is 22827862248.

It is a happy number.

It is a super-2 number, since 2×842268728220² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842268728227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5172282 + ... + 5332638.

It is an arithmetic number, because the mean of its divisors is an integer number (49133210126).

Almost surely, 2^842268728220 is an apocalyptic number.

It is an amenable number.

842268728220 is an abundant number, since it is smaller than the sum of its proper divisors (1516125357828).

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

842268728220 is a wasteful number, since it uses less digits than its factorization.

842268728220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247910 (or 247908 counting only the distinct ones).

The product of its (nonzero) digits is 2752512, while the sum is 51.

The spelling of 842268728220 in words is "eight hundred forty-two billion, two hundred sixty-eight million, seven hundred twenty-eight thousand, two hundred twenty".