144765 has 12 divisors (see below), whose sum is σ = 251004. Its totient is φ = 77184.

The previous prime is 144763. The next prime is 144773. The reversal of 144765 is 567441.

It can be written as a sum of positive squares in 2 ways, for example, as 95481 + 49284 = 309^2 + 222^2 .

It is not a de Polignac number, because 144765 - 2¹ = 144763 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 144765.

It is not an unprimeable number, because it can be changed into a prime (144763) 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 in 11 ways as a sum of consecutive naturals, for example, 1564 + ... + 1653.

It is an arithmetic number, because the mean of its divisors is an integer number (20917).

2¹⁴⁴⁷⁶⁵ is an apocalyptic number.

144765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144765 is a deficient number, since it is larger than the sum of its proper divisors (106239).

144765 is a wasteful number, since it uses less digits than its factorization.

144765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3228 (or 3225 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 144765 is about 380.4799600505. The cubic root of 144765 is about 52.5074819269.

It can be divided in two parts, 144 and 765, that added together give a palindrome (909).

The spelling of 144765 in words is "one hundred forty-four thousand, seven hundred sixty-five".