2840042 has 8 divisors (see below), whose sum is σ = 4270656. Its totient is φ = 1416492.

The previous prime is 2840041. The next prime is 2840059. The reversal of 2840042 is 2400482.

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

It is a junction number, because it is equal to n+sod(n) for n = 2839996 and 2840023.

It is not an unprimeable number, because it can be changed into a prime (2840041) 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, 608 + ... + 2459.

It is an arithmetic number, because the mean of its divisors is an integer number (533832).

2^2840042 is an apocalyptic number.

2840042 is a deficient number, since it is larger than the sum of its proper divisors (1430614).

2840042 is a wasteful number, since it uses less digits than its factorization.

2840042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3532.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 2840042 is about 1685.2424157966. The cubic root of 2840042 is about 141.6146731153.

The spelling of 2840042 in words is "two million, eight hundred forty thousand, forty-two".