144121321 has 2 divisors, whose sum is σ = 144121322. Its totient is φ = 144121320.

The previous prime is 144121309. The next prime is 144121331. The reversal of 144121321 is 123121441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144120025 + 1296 = 12005^2 + 36^2 .

It is a cyclic number.

It is not a de Polignac number, because 144121321 - 2¹⁹ = 143597033 is a prime.

It is not a weakly prime, because it can be changed into another prime (144121331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72060660 + 72060661.

It is an arithmetic number, because the mean of its divisors is an integer number (72060661).

Almost surely, 2^144121321 is an apocalyptic number.

It is an amenable number.

144121321 is a deficient number, since it is larger than the sum of its proper divisors (1).

144121321 is an equidigital number, since it uses as much as digits as its factorization.

144121321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 19.

The square root of 144121321 is about 12005.0539773880. The cubic root of 144121321 is about 524.2954370439.

Adding to 144121321 its reverse (123121441), we get a palindrome (267242762).

The spelling of 144121321 in words is "one hundred forty-four million, one hundred twenty-one thousand, three hundred twenty-one".