4432121 has 4 divisors (see below), whose sum is σ = 4692852. Its totient is φ = 4171392.

The previous prime is 4432097. The next prime is 4432151. The reversal of 4432121 is 1212344.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1755625 + 2676496 = 1325^2 + 1636^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4432121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 260713 = 4432121 / (4 + 4 + 3 + 2 + 1 + 2 + 1).

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4432121.

It is not an unprimeable number, because it can be changed into a prime (4432151) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 130340 + ... + 130373.

It is an arithmetic number, because the mean of its divisors is an integer number (1173213).

Almost surely, 2^4432121 is an apocalyptic number.

It is an amenable number.

4432121 is a deficient number, since it is larger than the sum of its proper divisors (260731).

4432121 is a wasteful number, since it uses less digits than its factorization.

4432121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260730.

The product of its digits is 192, while the sum is 17.

The square root of 4432121 is about 2105.2603164455. The cubic root of 4432121 is about 164.2620364832.

Adding to 4432121 its reverse (1212344), we get a palindrome (5644465).

The spelling of 4432121 in words is "four million, four hundred thirty-two thousand, one hundred twenty-one".