840533842 has 8 divisors (see below), whose sum is σ = 1266076800. Its totient is φ = 418508244.

The previous prime is 840533819. The next prime is 840533843. The reversal of 840533842 is 248335048.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (840533843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 878742 + ... + 879697.

It is an arithmetic number, because the mean of its divisors is an integer number (158259600).

Almost surely, 2^840533842 is an apocalyptic number.

840533842 is a deficient number, since it is larger than the sum of its proper divisors (425542958).

840533842 is a wasteful number, since it uses less digits than its factorization.

840533842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758680.

The product of its (nonzero) digits is 92160, while the sum is 37.

The square root of 840533842 is about 28991.9616790586. The cubic root of 840533842 is about 943.7386349405.

The spelling of 840533842 in words is "eight hundred forty million, five hundred thirty-three thousand, eight hundred forty-two".