144514021 has 2 divisors, whose sum is σ = 144514022. Its totient is φ = 144514020.

The previous prime is 144513997. The next prime is 144514031. The reversal of 144514021 is 120415441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119902500 + 24611521 = 10950^2 + 4961^2 .

It is an emirp because it is prime and its reverse (120415441) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144514021 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 144513983 and 144514001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144514031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72257010 + 72257011.

It is an arithmetic number, because the mean of its divisors is an integer number (72257011).

Almost surely, 2^144514021 is an apocalyptic number.

It is an amenable number.

144514021 is a deficient number, since it is larger than the sum of its proper divisors (1).

144514021 is an equidigital number, since it uses as much as digits as its factorization.

144514021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 144514021 is about 12021.3984627413. The cubic root of 144514021 is about 524.7712031006.

Adding to 144514021 its reverse (120415441), we get a palindrome (264929462).

The spelling of 144514021 in words is "one hundred forty-four million, five hundred fourteen thousand, twenty-one".