2042778 has 16 divisors (see below), whose sum is σ = 4102560. Its totient is φ = 678096.

The previous prime is 2042767. The next prime is 2042783. The reversal of 2042778 is 8772402.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1288 + ... + 2396.

It is an arithmetic number, because the mean of its divisors is an integer number (256410).

2^2042778 is an apocalyptic number.

2042778 is an abundant number, since it is smaller than the sum of its proper divisors (2059782).

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

2042778 is a wasteful number, since it uses less digits than its factorization.

2042778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1421.

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 2042778 is about 1429.2578493750. The cubic root of 2042778 is about 126.8840572857.

The spelling of 2042778 in words is "two million, forty-two thousand, seven hundred seventy-eight".