4442121 has 20 divisors (see below), whose sum is σ = 6695172. Its totient is φ = 2935008.

The previous prime is 4442107. The next prime is 4442131. The reversal of 4442121 is 1212444.

It can be written as a sum of positive squares in 2 ways, for example, as 2073600 + 2368521 = 1440^2 + 1539^2 .

It is not a de Polignac number, because 4442121 - 2¹³ = 4433929 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4442094 and 4442103.

It is not an unprimeable number, because it can be changed into a prime (4442101) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13855 + ... + 14171.

Almost surely, 2^4442121 is an apocalyptic number.

It is an amenable number.

4442121 is a deficient number, since it is larger than the sum of its proper divisors (2253051).

4442121 is a wasteful number, since it uses less digits than its factorization.

4442121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502 (or 493 counting only the distinct ones).

The product of its digits is 256, while the sum is 18.

The square root of 4442121 is about 2107.6339815063. The cubic root of 4442121 is about 164.3854827609.

Adding to 4442121 its reverse (1212444), we get a palindrome (5654565).

The spelling of 4442121 in words is "four million, four hundred forty-two thousand, one hundred twenty-one".