4428121 has 8 divisors (see below), whose sum is σ = 4864320. Its totient is φ = 4012272.

The previous prime is 4428113. The next prime is 4428139. The reversal of 4428121 is 1218244.

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 4428121 - 2³ = 4428113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4428092 and 4428101.

It is not an unprimeable number, because it can be changed into a prime (4428161) 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, 4630 + ... + 5503.

It is an arithmetic number, because the mean of its divisors is an integer number (608040).

Almost surely, 2^4428121 is an apocalyptic number.

It is an amenable number.

4428121 is a deficient number, since it is larger than the sum of its proper divisors (436199).

4428121 is a wasteful number, since it uses less digits than its factorization.

4428121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10175.

The product of its digits is 512, while the sum is 22.

The square root of 4428121 is about 2104.3101007218. The cubic root of 4428121 is about 164.2126059804.

The spelling of 4428121 in words is "four million, four hundred twenty-eight thousand, one hundred twenty-one".