840742318 has 16 divisors (see below), whose sum is σ = 1359587376. Its totient is φ = 387616320.

The previous prime is 840742313. The next prime is 840742319. The reversal of 840742318 is 813247048.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840742313) 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, 7813 + ... + 41743.

It is an arithmetic number, because the mean of its divisors is an integer number (84974211).

Almost surely, 2^840742318 is an apocalyptic number.

840742318 is a deficient number, since it is larger than the sum of its proper divisors (518845058).

840742318 is a wasteful number, since it uses less digits than its factorization.

840742318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34899.

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 840742318 is about 28995.5568665270. The cubic root of 840742318 is about 943.8166530531.

The spelling of 840742318 in words is "eight hundred forty million, seven hundred forty-two thousand, three hundred eighteen".