144042321 has 4 divisors (see below), whose sum is σ = 192056432. Its totient is φ = 96028212.

The previous prime is 144042313. The next prime is 144042329. The reversal of 144042321 is 123240441.

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 an interprime number because it is at equal distance from previous prime (144042313) and next prime (144042329).

It is not a de Polignac number, because 144042321 - 2³ = 144042313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144042329) 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, 24007051 + ... + 24007056.

It is an arithmetic number, because the mean of its divisors is an integer number (48014108).

Almost surely, 2^144042321 is an apocalyptic number.

It is an amenable number.

144042321 is a deficient number, since it is larger than the sum of its proper divisors (48014111).

144042321 is an equidigital number, since it uses as much as digits as its factorization.

144042321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48014110.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 144042321 is about 12001.7632454569. The cubic root of 144042321 is about 524.1996221440.

Adding to 144042321 its reverse (123240441), we get a palindrome (267282762).

The spelling of 144042321 in words is "one hundred forty-four million, forty-two thousand, three hundred twenty-one".