144505121 has 2 divisors, whose sum is σ = 144505122. Its totient is φ = 144505120.

The previous prime is 144505111. The next prime is 144505129. The reversal of 144505121 is 121505441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140659600 + 3845521 = 11860^2 + 1961^2 .

It is an emirp because it is prime and its reverse (121505441) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144505121 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (144505129) 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 as a sum of consecutive naturals, namely, 72252560 + 72252561.

It is an arithmetic number, because the mean of its divisors is an integer number (72252561).

Almost surely, 2^144505121 is an apocalyptic number.

It is an amenable number.

144505121 is a deficient number, since it is larger than the sum of its proper divisors (1).

144505121 is an equidigital number, since it uses as much as digits as its factorization.

144505121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 144505121 is about 12021.0282838033. The cubic root of 144505121 is about 524.7604300754.

The spelling of 144505121 in words is "one hundred forty-four million, five hundred five thousand, one hundred twenty-one".