144242242457 has 2 divisors, whose sum is σ = 144242242458. Its totient is φ = 144242242456.

The previous prime is 144242242439. The next prime is 144242242493. The reversal of 144242242457 is 754242242441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123137126281 + 21105116176 = 350909^2 + 145276^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144242242457 is a prime.

It is not a weakly prime, because it can be changed into another prime (144242241457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72121121228 + 72121121229.

It is an arithmetic number, because the mean of its divisors is an integer number (72121121229).

Almost surely, 2^144242242457 is an apocalyptic number.

It is an amenable number.

144242242457 is a deficient number, since it is larger than the sum of its proper divisors (1).

144242242457 is an equidigital number, since it uses as much as digits as its factorization.

144242242457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 573440, while the sum is 41.

Adding to 144242242457 its reverse (754242242441), we get a palindrome (898484484898).

The spelling of 144242242457 in words is "one hundred forty-four billion, two hundred forty-two million, two hundred forty-two thousand, four hundred fifty-seven".