840876342 has 32 divisors (see below), whose sum is σ = 1741105152. Its totient is φ = 270563904.

The previous prime is 840876317. The next prime is 840876349. The reversal of 840876342 is 243678048.

It is a junction number, because it is equal to n+sod(n) for n = 840876294 and 840876303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840876349) 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, 163 + ... + 41009.

It is an arithmetic number, because the mean of its divisors is an integer number (54409536).

Almost surely, 2^840876342 is an apocalyptic number.

840876342 is an abundant number, since it is smaller than the sum of its proper divisors (900228810).

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

840876342 is a wasteful number, since it uses less digits than its factorization.

840876342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40972.

The product of its (nonzero) digits is 258048, while the sum is 42.

The square root of 840876342 is about 28997.8678871396. The cubic root of 840876342 is about 943.8668021334.

The spelling of 840876342 in words is "eight hundred forty million, eight hundred seventy-six thousand, three hundred forty-two".