144042209 has 2 divisors, whose sum is σ = 144042210. Its totient is φ = 144042208.

The previous prime is 144042163. The next prime is 144042233. The reversal of 144042209 is 902240441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133980625 + 10061584 = 11575^2 + 3172^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144042209 is a prime.

It is not a weakly prime, because it can be changed into another prime (144042299) 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, 72021104 + 72021105.

It is an arithmetic number, because the mean of its divisors is an integer number (72021105).

Almost surely, 2^144042209 is an apocalyptic number.

It is an amenable number.

144042209 is a deficient number, since it is larger than the sum of its proper divisors (1).

144042209 is an equidigital number, since it uses as much as digits as its factorization.

144042209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 144042209 is about 12001.7585794749. The cubic root of 144042209 is about 524.1994862803.

The spelling of 144042209 in words is "one hundred forty-four million, forty-two thousand, two hundred nine".