2042978 has 16 divisors (see below), whose sum is σ = 3552000. Its totient is φ = 863136.

The previous prime is 2042969. The next prime is 2042981. The reversal of 2042978 is 8792402.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23 + ... + 2021.

It is an arithmetic number, because the mean of its divisors is an integer number (222000).

2^2042978 is an apocalyptic number.

2042978 is a deficient number, since it is larger than the sum of its proper divisors (1509022).

2042978 is a wasteful number, since it uses less digits than its factorization.

2042978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2081.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 2042978 is about 1429.3278140441. The cubic root of 2042978 is about 126.8881980495. Note that the first 3 decimals are identical.

The spelling of 2042978 in words is "two million, forty-two thousand, nine hundred seventy-eight".