4778121 has 8 divisors (see below), whose sum is σ = 6421504. Its totient is φ = 3160080.

The previous prime is 4778119. The next prime is 4778129. The reversal of 4778121 is 1218774.

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

It is not a de Polignac number, because 4778121 - 2¹ = 4778119 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4778129) 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, 5890 + ... + 6651.

It is an arithmetic number, because the mean of its divisors is an integer number (802688).

Almost surely, 2^4778121 is an apocalyptic number.

It is an amenable number.

4778121 is a deficient number, since it is larger than the sum of its proper divisors (1643383).

4778121 is a wasteful number, since it uses less digits than its factorization.

4778121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12671.

The product of its digits is 3136, while the sum is 30.

The square root of 4778121 is about 2185.8913513713. The cubic root of 4778121 is about 168.4298445571.

The spelling of 4778121 in words is "four million, seven hundred seventy-eight thousand, one hundred twenty-one".