4778142 has 16 divisors (see below), whose sum is σ = 9688080. Its totient is φ = 1570752.

The previous prime is 4778129. The next prime is 4778153. The reversal of 4778142 is 2418774.

It is an Ulam number.

It is a congruent 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, 5017 + ... + 5892.

It is an arithmetic number, because the mean of its divisors is an integer number (605505).

Almost surely, 2^4778142 is an apocalyptic number.

4778142 is an abundant number, since it is smaller than the sum of its proper divisors (4909938).

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

4778142 is a wasteful number, since it uses less digits than its factorization.

4778142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10987.

The product of its digits is 12544, while the sum is 33.

The square root of 4778142 is about 2185.8961548985. The cubic root of 4778142 is about 168.4300913084.

The spelling of 4778142 in words is "four million, seven hundred seventy-eight thousand, one hundred forty-two".