144412421 has 2 divisors, whose sum is σ = 144412422. Its totient is φ = 144412420.

The previous prime is 144412393. The next prime is 144412441. The reversal of 144412421 is 124214441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143664196 + 748225 = 11986^2 + 865^2 .

It is a cyclic number.

It is not a de Polignac number, because 144412421 - 2⁶ = 144412357 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144412441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72206210 + 72206211.

It is an arithmetic number, because the mean of its divisors is an integer number (72206211).

Almost surely, 2^144412421 is an apocalyptic number.

It is an amenable number.

144412421 is a deficient number, since it is larger than the sum of its proper divisors (1).

144412421 is an equidigital number, since it uses as much as digits as its factorization.

144412421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1024, while the sum is 23.

The square root of 144412421 is about 12017.1719218791. The cubic root of 144412421 is about 524.6481948429.

Adding to 144412421 its reverse (124214441), we get a palindrome (268626862).

The spelling of 144412421 in words is "one hundred forty-four million, four hundred twelve thousand, four hundred twenty-one".