840873402 has 24 divisors (see below), whose sum is σ = 1830535200. Its totient is φ = 278961480.

The previous prime is 840873361. The next prime is 840873427. The reversal of 840873402 is 204378048.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106902 + ... + 114497.

It is an arithmetic number, because the mean of its divisors is an integer number (76272300).

Almost surely, 2^840873402 is an apocalyptic number.

840873402 is an abundant number, since it is smaller than the sum of its proper divisors (989661798).

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

840873402 is a wasteful number, since it uses less digits than its factorization.

840873402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221618 (or 221615 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 840873402 is about 28997.8171937130. The cubic root of 840873402 is about 943.8657021018.

It can be divided in two parts, 8408 and 73402, that added together give a triangular number (81810 = T₄₀₄).

The spelling of 840873402 in words is "eight hundred forty million, eight hundred seventy-three thousand, four hundred two".