144421140321 has 20 divisors (see below), whose sum is σ = 215761862932. Its totient is φ = 96271102368.

The previous prime is 144421140319. The next prime is 144421140329. The reversal of 144421140321 is 123041124441.

144421140321 is a `hidden beast` number, since 1 + 4 + 44 + 211 + 403 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17912877921 + 126508262400 = 133839^2 + 355680^2 .

It is not a de Polignac number, because 144421140321 - 2¹ = 144421140319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144421140329) 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 19 ways as a sum of consecutive naturals, for example, 774231 + ... + 942483.

Almost surely, 2^144421140321 is an apocalyptic number.

It is an amenable number.

144421140321 is a deficient number, since it is larger than the sum of its proper divisors (71340722611).

144421140321 is a wasteful number, since it uses less digits than its factorization.

144421140321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178862 (or 178853 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 144421140321 its reverse (123041124441), we get a palindrome (267462264762).

The spelling of 144421140321 in words is "one hundred forty-four billion, four hundred twenty-one million, one hundred forty thousand, three hundred twenty-one".