2778042 has 16 divisors (see below), whose sum is σ = 5587200. Its totient is φ = 920832.

The previous prime is 2778023. The next prime is 2778049. The reversal of 2778042 is 2408772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2778049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42 + ... + 2357.

It is an arithmetic number, because the mean of its divisors is an integer number (349200).

2^2778042 is an apocalyptic number.

2778042 is an abundant number, since it is smaller than the sum of its proper divisors (2809158).

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

2778042 is a wasteful number, since it uses less digits than its factorization.

2778042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2597.

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

The square root of 2778042 is about 1666.7459314485. The cubic root of 2778042 is about 140.5765678154.

The spelling of 2778042 in words is "two million, seven hundred seventy-eight thousand, forty-two".