4144321 has 4 divisors (see below), whose sum is σ = 4245444. Its totient is φ = 4043200.

The previous prime is 4144307. The next prime is 4144331. The reversal of 4144321 is 1234414.

4144321 = 1439² + 1440².

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 2073600 + 2070721 = 1440^2 + 1439^2 .

It is a cyclic number.

It is not a de Polignac number, because 4144321 - 2¹⁵ = 4111553 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4144331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50500 + ... + 50581.

It is an arithmetic number, because the mean of its divisors is an integer number (1061361).

Almost surely, 2^4144321 is an apocalyptic number.

4144321 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

4144321 is the 1440-th centered square number.

It is an amenable number.

4144321 is a deficient number, since it is larger than the sum of its proper divisors (101123).

4144321 is a wasteful number, since it uses less digits than its factorization.

4144321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101122.

The product of its digits is 384, while the sum is 19.

The square root of 4144321 is about 2035.7605458403. The cubic root of 4144321 is about 160.6267216074.

Adding to 4144321 its reverse (1234414), we get a palindrome (5378735).

It can be divided in two parts, 4144 and 321, that added together give a triangular number (4465 = T₉₄).

The spelling of 4144321 in words is "four million, one hundred forty-four thousand, three hundred twenty-one".