842706308340 has 216 divisors, whose sum is σ = 2803011644160. Its totient is φ = 204809050368.

The previous prime is 842706308299. The next prime is 842706308363. The reversal of 842706308340 is 43803607248.

842706308340 is a `hidden beast` number, since 8 + 4 + 2 + 7 + 0 + 630 + 8 + 3 + 4 + 0 = 666.

842706308340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2227849 + ... + 2578511.

It is an arithmetic number, because the mean of its divisors is an integer number (12976905760).

Almost surely, 2^842706308340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 842706308340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1401505822080).

842706308340 is an abundant number, since it is smaller than the sum of its proper divisors (1960305335820).

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

842706308340 is a wasteful number, since it uses less digits than its factorization.

842706308340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350783 (or 350765 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 842706308340 in words is "eight hundred forty-two billion, seven hundred six million, three hundred eight thousand, three hundred forty".