144217123 has 2 divisors, whose sum is σ = 144217124. Its totient is φ = 144217122.

The previous prime is 144217109. The next prime is 144217147. The reversal of 144217123 is 321712441.

It is a weak prime.

It is an emirp because it is prime and its reverse (321712441) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144217123 is a prime.

It is not a weakly prime, because it can be changed into another prime (144217223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72108561 + 72108562.

It is an arithmetic number, because the mean of its divisors is an integer number (72108562).

Almost surely, 2^144217123 is an apocalyptic number.

144217123 is a deficient number, since it is larger than the sum of its proper divisors (1).

144217123 is an equidigital number, since it uses as much as digits as its factorization.

144217123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 25.

The square root of 144217123 is about 12009.0433840502. The cubic root of 144217123 is about 524.4115832317.

Adding to 144217123 its reverse (321712441), we get a palindrome (465929564).

The spelling of 144217123 in words is "one hundred forty-four million, two hundred seventeen thousand, one hundred twenty-three".