840142346 has 32 divisors (see below), whose sum is σ = 1398062592. Its totient is φ = 376865280.

The previous prime is 840142339. The next prime is 840142403. The reversal of 840142346 is 643241048.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64670 + ... + 76566.

It is an arithmetic number, because the mean of its divisors is an integer number (43689456).

Almost surely, 2^840142346 is an apocalyptic number.

840142346 is a deficient number, since it is larger than the sum of its proper divisors (557920246).

840142346 is a wasteful number, since it uses less digits than its factorization.

840142346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12014.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 840142346 is about 28985.2090901549. The cubic root of 840142346 is about 943.5920902647.

The spelling of 840142346 in words is "eight hundred forty million, one hundred forty-two thousand, three hundred forty-six".