144145145 has 4 divisors (see below), whose sum is σ = 172974180. Its totient is φ = 115316112.

The previous prime is 144145139. The next prime is 144145147. The reversal of 144145145 is 541541441.

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 59799289 + 84345856 = 7733^2 + 9184^2 .

It is a cyclic number.

It is not a de Polignac number, because 144145145 - 2⁴ = 144145129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144145147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14414510 + ... + 14414519.

It is an arithmetic number, because the mean of its divisors is an integer number (43243545).

Almost surely, 2^144145145 is an apocalyptic number.

It is an amenable number.

144145145 is a deficient number, since it is larger than the sum of its proper divisors (28829035).

144145145 is an equidigital number, since it uses as much as digits as its factorization.

144145145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28829034.

The product of its digits is 6400, while the sum is 29.

The square root of 144145145 is about 12006.0461851519. The cubic root of 144145145 is about 524.3243250349.

Adding to 144145145 its reverse (541541441), we get a palindrome (685686586).

The spelling of 144145145 in words is "one hundred forty-four million, one hundred forty-five thousand, one hundred forty-five".