4778143 has 8 divisors (see below), whose sum is σ = 4965840. Its totient is φ = 4593600.

The previous prime is 4778129. The next prime is 4778153. The reversal of 4778143 is 3418774.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4778143 - 2²¹ = 2680991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4778099 and 4778108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4778113) 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, 2568 + ... + 4018.

It is an arithmetic number, because the mean of its divisors is an integer number (620730).

Almost surely, 2^4778143 is an apocalyptic number.

4778143 is a deficient number, since it is larger than the sum of its proper divisors (187697).

4778143 is a wasteful number, since it uses less digits than its factorization.

4778143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577.

The product of its digits is 18816, while the sum is 34.

The square root of 4778143 is about 2185.8963836376. The cubic root of 4778143 is about 168.4301030584.

The spelling of 4778143 in words is "four million, seven hundred seventy-eight thousand, one hundred forty-three".