144032321 has 4 divisors (see below), whose sum is σ = 144104532. Its totient is φ = 143960112.

The previous prime is 144032297. The next prime is 144032359. The reversal of 144032321 is 123230441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123230441 = 79 ⋅1559879.

It can be written as a sum of positive squares in 2 ways, for example, as 46240000 + 97792321 = 6800^2 + 9889^2 .

It is a cyclic number.

It is not a de Polignac number, because 144032321 - 2⁶ = 144032257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144032293 and 144032302.

It is not an unprimeable number, because it can be changed into a prime (144037321) 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, 33026 + ... + 37131.

It is an arithmetic number, because the mean of its divisors is an integer number (36026133).

Almost surely, 2^144032321 is an apocalyptic number.

It is an amenable number.

144032321 is a deficient number, since it is larger than the sum of its proper divisors (72211).

144032321 is an equidigital number, since it uses as much as digits as its factorization.

144032321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72210.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 144032321 is about 12001.3466327742. The cubic root of 144032321 is about 524.1874911779.

Adding to 144032321 its reverse (123230441), we get a palindrome (267262762).

The spelling of 144032321 in words is "one hundred forty-four million, thirty-two thousand, three hundred twenty-one".