842343380 has 12 divisors (see below), whose sum is σ = 1768921140. Its totient is φ = 336937344.

The previous prime is 842343371. The next prime is 842343419. The reversal of 842343380 is 83343248.

It can be written as a sum of positive squares in 2 ways, for example, as 140517316 + 701826064 = 11854^2 + 26492^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 842343380.

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, 21058565 + ... + 21058604.

It is an arithmetic number, because the mean of its divisors is an integer number (147410095).

Almost surely, 2^842343380 is an apocalyptic number.

It is an amenable number.

842343380 is an abundant number, since it is smaller than the sum of its proper divisors (926577760).

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

842343380 is a wasteful number, since it uses less digits than its factorization.

842343380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42117178 (or 42117176 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 35.

The square root of 842343380 is about 29023.1524821133. The cubic root of 842343380 is about 944.4153901199.

The spelling of 842343380 in words is "eight hundred forty-two million, three hundred forty-three thousand, three hundred eighty".