144420329 has 2 divisors, whose sum is σ = 144420330. Its totient is φ = 144420328.

The previous prime is 144420307. The next prime is 144420343. The reversal of 144420329 is 923024441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144120025 + 300304 = 12005^2 + 548^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144420329 is a prime.

It is not a weakly prime, because it can be changed into another prime (144422329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72210164 + 72210165.

It is an arithmetic number, because the mean of its divisors is an integer number (72210165).

Almost surely, 2^144420329 is an apocalyptic number.

It is an amenable number.

144420329 is a deficient number, since it is larger than the sum of its proper divisors (1).

144420329 is an equidigital number, since it uses as much as digits as its factorization.

144420329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 144420329 is about 12017.5009465363. The cubic root of 144420329 is about 524.6577712172.

The spelling of 144420329 in words is "one hundred forty-four million, four hundred twenty thousand, three hundred twenty-nine".