144203242321 has 4 divisors (see below), whose sum is σ = 144256872100. Its totient is φ = 144149612544.

The previous prime is 144203242303. The next prime is 144203242367. The reversal of 144203242321 is 123242302441.

144203242321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123242302441 = 379 ⋅325177579.

It can be written as a sum of positive squares in 2 ways, for example, as 49932137025 + 94271105296 = 223455^2 + 307036^2 .

It is a cyclic number.

It is not a de Polignac number, because 144203242321 - 2⁷ = 144203242193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144203242321.

It is not an unprimeable number, because it can be changed into a prime (144203243321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26810856 + ... + 26816233.

It is an arithmetic number, because the mean of its divisors is an integer number (36064218025).

Almost surely, 2^144203242321 is an apocalyptic number.

It is an amenable number.

144203242321 is a deficient number, since it is larger than the sum of its proper divisors (53629779).

144203242321 is an equidigital number, since it uses as much as digits as its factorization.

144203242321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53629778.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 144203242321 its reverse (123242302441), we get a palindrome (267445544762).

The spelling of 144203242321 in words is "one hundred forty-four billion, two hundred three million, two hundred forty-two thousand, three hundred twenty-one".