144248765 has 4 divisors (see below), whose sum is σ = 173098524. Its totient is φ = 115399008.

The previous prime is 144248729. The next prime is 144248777. The reversal of 144248765 is 567842441.

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 19412836 + 124835929 = 4406^2 + 11173^2 .

It is a cyclic number.

It is not a de Polignac number, because 144248765 - 2⁸ = 144248509 is a prime.

It is a Duffinian number.

It is a congruent 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, 14424872 + ... + 14424881.

It is an arithmetic number, because the mean of its divisors is an integer number (43274631).

Almost surely, 2^144248765 is an apocalyptic number.

It is an amenable number.

144248765 is a deficient number, since it is larger than the sum of its proper divisors (28849759).

144248765 is an equidigital number, since it uses as much as digits as its factorization.

144248765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28849758.

The product of its digits is 215040, while the sum is 41.

The square root of 144248765 is about 12010.3607356315. The cubic root of 144248765 is about 524.4499333193.

The spelling of 144248765 in words is "one hundred forty-four million, two hundred forty-eight thousand, seven hundred sixty-five".