144542021329 has 4 divisors (see below), whose sum is σ = 148448562484. Its totient is φ = 140635480176.

The previous prime is 144542021317. The next prime is 144542021369. The reversal of 144542021329 is 923120245441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 62832942225 + 81709079104 = 250665^2 + 285848^2 .

It is a cyclic number.

It is not a de Polignac number, because 144542021329 - 2¹⁵ = 144541988561 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 3906541117 = 144542021329 / (1 + 4 + 4 + 5 + 4 + 2 + 0 + 2 + 1 + 3 + 2 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144542021369) 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, 1953270522 + ... + 1953270595.

It is an arithmetic number, because the mean of its divisors is an integer number (37112140621).

Almost surely, 2^144542021329 is an apocalyptic number.

It is an amenable number.

144542021329 is a deficient number, since it is larger than the sum of its proper divisors (3906541155).

144542021329 is an equidigital number, since it uses as much as digits as its factorization.

144542021329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3906541154.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 144542021329 in words is "one hundred forty-four billion, five hundred forty-two million, twenty-one thousand, three hundred twenty-nine".