840442002 has 16 divisors (see below), whose sum is σ = 1687089792. Its totient is φ = 279113040.

The previous prime is 840441983. The next prime is 840442027. The reversal of 840442002 is 200244048.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256813 + ... + 260064.

It is an arithmetic number, because the mean of its divisors is an integer number (105443112).

Almost surely, 2^840442002 is an apocalyptic number.

840442002 is an abundant number, since it is smaller than the sum of its proper divisors (846647790).

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

840442002 is a wasteful number, since it uses less digits than its factorization.

840442002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517153.

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 840442002 is about 28990.3777484875. The cubic root of 840442002 is about 943.7042615028.

The spelling of 840442002 in words is "eight hundred forty million, four hundred forty-two thousand, two".