840873342 has 16 divisors (see below), whose sum is σ = 1720857600. Its totient is φ = 273772632.

The previous prime is 840873323. The next prime is 840873347. The reversal of 840873342 is 243378048.

It is a self number, because there is not a number n which added to its sum of digits gives 840873342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840873347) 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, 1629342 + ... + 1629857.

It is an arithmetic number, because the mean of its divisors is an integer number (107553600).

Almost surely, 2^840873342 is an apocalyptic number.

840873342 is an abundant number, since it is smaller than the sum of its proper divisors (879984258).

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

840873342 is a wasteful number, since it uses less digits than its factorization.

840873342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3259247.

The product of its (nonzero) digits is 129024, while the sum is 39.

The square root of 840873342 is about 28997.8161591524. The cubic root of 840873342 is about 943.8656796522.

The spelling of 840873342 in words is "eight hundred forty million, eight hundred seventy-three thousand, three hundred forty-two".