144123321 has 4 divisors (see below), whose sum is σ = 192164432. Its totient is φ = 96082212.

The previous prime is 144123311. The next prime is 144123347. The reversal of 144123321 is 123321441.

144123321 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 144123321 - 2⁵ = 144123289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144123311) 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, 24020551 + ... + 24020556.

It is an arithmetic number, because the mean of its divisors is an integer number (48041108).

Almost surely, 2^144123321 is an apocalyptic number.

It is an amenable number.

144123321 is a deficient number, since it is larger than the sum of its proper divisors (48041111).

144123321 is an equidigital number, since it uses as much as digits as its factorization.

144123321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48041110.

The product of its digits is 576, while the sum is 21.

The square root of 144123321 is about 12005.1372753501. The cubic root of 144123321 is about 524.2978622830.

Adding to 144123321 its reverse (123321441), we get a palindrome (267444762).

The spelling of 144123321 in words is "one hundred forty-four million, one hundred twenty-three thousand, three hundred twenty-one".