4778942 has 16 divisors (see below), whose sum is σ = 8242560. Its totient is φ = 2035608.

The previous prime is 4778933. The next prime is 4778953. The reversal of 4778942 is 2498774.

It is a self number, because there is not a number n which added to its sum of digits gives 4778942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1553 + ... + 3459.

It is an arithmetic number, because the mean of its divisors is an integer number (515160).

Almost surely, 2^4778942 is an apocalyptic number.

4778942 is a deficient number, since it is larger than the sum of its proper divisors (3463618).

4778942 is a wasteful number, since it uses less digits than its factorization.

4778942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2095.

The product of its digits is 112896, while the sum is 41.

The square root of 4778942 is about 2186.0791385492. The cubic root of 4778942 is about 168.4394908165.

The spelling of 4778942 in words is "four million, seven hundred seventy-eight thousand, nine hundred forty-two".