144540229 has 2 divisors, whose sum is σ = 144540230. Its totient is φ = 144540228.

The previous prime is 144540203. The next prime is 144540251. The reversal of 144540229 is 922045441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140968129 + 3572100 = 11873^2 + 1890^2 .

It is an emirp because it is prime and its reverse (922045441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144540229 - 2¹¹ = 144538181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 144540229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144540829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72270114 + 72270115.

It is an arithmetic number, because the mean of its divisors is an integer number (72270115).

Almost surely, 2^144540229 is an apocalyptic number.

It is an amenable number.

144540229 is a deficient number, since it is larger than the sum of its proper divisors (1).

144540229 is an equidigital number, since it uses as much as digits as its factorization.

144540229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 144540229 is about 12022.4884695308. The cubic root of 144540229 is about 524.8029240651.

The spelling of 144540229 in words is "one hundred forty-four million, five hundred forty thousand, two hundred twenty-nine".