144042442321 has 4 divisors (see below), whose sum is σ = 144056314944. Its totient is φ = 144028569700.

The previous prime is 144042442273. The next prime is 144042442337. The reversal of 144042442321 is 123244240441.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 144042442321 - 2¹⁷ = 144042311249 is a prime.

It is a super-2 number, since 2×144042442321² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144042442361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6920725 + ... + 6941506.

It is an arithmetic number, because the mean of its divisors is an integer number (36014078736).

Almost surely, 2^144042442321 is an apocalyptic number.

It is an amenable number.

144042442321 is a deficient number, since it is larger than the sum of its proper divisors (13872623).

144042442321 is a wasteful number, since it uses less digits than its factorization.

144042442321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13872622.

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 144042442321 its reverse (123244240441), we get a palindrome (267286682762).

The spelling of 144042442321 in words is "one hundred forty-four billion, forty-two million, four hundred forty-two thousand, three hundred twenty-one".