144069257 has 2 divisors, whose sum is σ = 144069258. Its totient is φ = 144069256.

The previous prime is 144069253. The next prime is 144069269. The reversal of 144069257 is 752960441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104366656 + 39702601 = 10216^2 + 6301^2 .

It is an emirp because it is prime and its reverse (752960441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144069257 - 2² = 144069253 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 144069257.

It is not a weakly prime, because it can be changed into another prime (144069253) 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, 72034628 + 72034629.

It is an arithmetic number, because the mean of its divisors is an integer number (72034629).

Almost surely, 2^144069257 is an apocalyptic number.

It is an amenable number.

144069257 is a deficient number, since it is larger than the sum of its proper divisors (1).

144069257 is an equidigital number, since it uses as much as digits as its factorization.

144069257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 144069257 is about 12002.8853614454. The cubic root of 144069257 is about 524.2322953215.

The spelling of 144069257 in words is "one hundred forty-four million, sixty-nine thousand, two hundred fifty-seven".