2805742 has 4 divisors (see below), whose sum is σ = 4208616. Its totient is φ = 1402870.

The previous prime is 2805713. The next prime is 2805757. The reversal of 2805742 is 2475082.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2805742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701434 + ... + 701437.

It is an arithmetic number, because the mean of its divisors is an integer number (1052154).

2^2805742 is an apocalyptic number.

2805742 is a deficient number, since it is larger than the sum of its proper divisors (1402874).

2805742 is a wasteful number, since it uses less digits than its factorization.

2805742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402873.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 2805742 is about 1675.0349250090. The cubic root of 2805742 is about 141.0422554977.

The spelling of 2805742 in words is "two million, eight hundred five thousand, seven hundred forty-two".