4778042 has 4 divisors (see below), whose sum is σ = 7167066. Its totient is φ = 2389020.

The previous prime is 4778041. The next prime is 4778051. The reversal of 4778042 is 2408774.

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

It can be written as a sum of positive squares in only one way, i.e., 3613801 + 1164241 = 1901^2 + 1079^2 .

It is not an unprimeable number, because it can be changed into a prime (4778041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1194509 + ... + 1194512.

Almost surely, 2^4778042 is an apocalyptic number.

4778042 is a deficient number, since it is larger than the sum of its proper divisors (2389024).

4778042 is a wasteful number, since it uses less digits than its factorization.

4778042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2389023.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 4778042 is about 2185.8732808651. The cubic root of 4778042 is about 168.4289162961.

The spelling of 4778042 in words is "four million, seven hundred seventy-eight thousand, forty-two".