144401305 has 4 divisors (see below), whose sum is σ = 173281572. Its totient is φ = 115521040.

The previous prime is 144401297. The next prime is 144401329. The reversal of 144401305 is 503104441.

144401305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64048009 + 80353296 = 8003^2 + 8964^2 .

It is not a de Polignac number, because 144401305 - 2³ = 144401297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14440126 + ... + 14440135.

It is an arithmetic number, because the mean of its divisors is an integer number (43320393).

Almost surely, 2^144401305 is an apocalyptic number.

It is an amenable number.

144401305 is a deficient number, since it is larger than the sum of its proper divisors (28880267).

144401305 is an equidigital number, since it uses as much as digits as its factorization.

144401305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28880266.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 144401305 is about 12016.7094081533. The cubic root of 144401305 is about 524.6347330762.

Adding to 144401305 its reverse (503104441), we get a palindrome (647505746).

The spelling of 144401305 in words is "one hundred forty-four million, four hundred one thousand, three hundred five".