144145321 has 4 divisors (see below), whose sum is σ = 144547200. Its totient is φ = 143743444.

The previous prime is 144145297. The next prime is 144145333. The reversal of 144145321 is 123541441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 123541441 = 23 ⋅5371367.

It is a cyclic number.

It is not a de Polignac number, because 144145321 - 2¹³ = 144137129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144145361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200401 + ... + 201118.

It is an arithmetic number, because the mean of its divisors is an integer number (36136800).

Almost surely, 2^144145321 is an apocalyptic number.

It is an amenable number.

144145321 is a deficient number, since it is larger than the sum of its proper divisors (401879).

144145321 is an equidigital number, since it uses as much as digits as its factorization.

144145321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401878.

The product of its digits is 1920, while the sum is 25.

The square root of 144145321 is about 12006.0535147899. The cubic root of 144145321 is about 524.3245384333.

Adding to 144145321 its reverse (123541441), we get a palindrome (267686762).

The spelling of 144145321 in words is "one hundred forty-four million, one hundred forty-five thousand, three hundred twenty-one".