144204121 has 2 divisors, whose sum is σ = 144204122. Its totient is φ = 144204120.

The previous prime is 144204103. The next prime is 144204139. The reversal of 144204121 is 121402441.

It is a balanced prime because it is at equal distance from previous prime (144204103) and next prime (144204139).

It can be written as a sum of positive squares in only one way, i.e., 75064896 + 69139225 = 8664^2 + 8315^2 .

It is a cyclic number.

It is not a de Polignac number, because 144204121 - 2²¹ = 142106969 is a prime.

It is not a weakly prime, because it can be changed into another prime (144204191) 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, 72102060 + 72102061.

It is an arithmetic number, because the mean of its divisors is an integer number (72102061).

Almost surely, 2^144204121 is an apocalyptic number.

It is an amenable number.

144204121 is a deficient number, since it is larger than the sum of its proper divisors (1).

144204121 is an equidigital number, since it uses as much as digits as its factorization.

144204121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 144204121 is about 12008.5020298120. The cubic root of 144204121 is about 524.3958231884.

Adding to 144204121 its reverse (121402441), we get a palindrome (265606562).

The spelling of 144204121 in words is "one hundred forty-four million, two hundred four thousand, one hundred twenty-one".