2782043 has 4 divisors (see below), whose sum is σ = 3034968. Its totient is φ = 2529120.

The previous prime is 2782019. The next prime is 2782049. The reversal of 2782043 is 3402872.

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

It is not a de Polignac number, because 2782043 - 2¹⁰ = 2781019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2782049) 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, 126446 + ... + 126467.

It is an arithmetic number, because the mean of its divisors is an integer number (758742).

2^2782043 is an apocalyptic number.

2782043 is a deficient number, since it is larger than the sum of its proper divisors (252925).

2782043 is a wasteful number, since it uses less digits than its factorization.

2782043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252924.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 2782043 is about 1667.9457425228. The cubic root of 2782043 is about 140.6440226448.

The spelling of 2782043 in words is "two million, seven hundred eighty-two thousand, forty-three".