144105457 has 2 divisors, whose sum is σ = 144105458. Its totient is φ = 144105456.

The previous prime is 144105449. The next prime is 144105461. The reversal of 144105457 is 754501441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117158976 + 26946481 = 10824^2 + 5191^2 .

It is an emirp because it is prime and its reverse (754501441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144105457 - 2³ = 144105449 is a prime.

It is not a weakly prime, because it can be changed into another prime (144105497) 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 as a sum of consecutive naturals, namely, 72052728 + 72052729.

It is an arithmetic number, because the mean of its divisors is an integer number (72052729).

Almost surely, 2^144105457 is an apocalyptic number.

It is an amenable number.

144105457 is a deficient number, since it is larger than the sum of its proper divisors (1).

144105457 is an equidigital number, since it uses as much as digits as its factorization.

144105457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 144105457 is about 12004.3932374777. The cubic root of 144105457 is about 524.2761992518.

Adding to 144105457 its reverse (754501441), we get a palindrome (898606898).

The spelling of 144105457 in words is "one hundred forty-four million, one hundred five thousand, four hundred fifty-seven".