144240505 has 8 divisors (see below), whose sum is σ = 173270592. Its totient is φ = 115271088.

The previous prime is 144240497. The next prime is 144240511. The reversal of 144240505 is 505042441.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144240505 - 2³ = 144240497 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144240505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9759 + ... + 19588.

It is an arithmetic number, because the mean of its divisors is an integer number (21658824).

Almost surely, 2^144240505 is an apocalyptic number.

It is an amenable number.

144240505 is a deficient number, since it is larger than the sum of its proper divisors (29030087).

144240505 is an equidigital number, since it uses as much as digits as its factorization.

144240505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30335.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 144240505 is about 12010.0168609374. The cubic root of 144240505 is about 524.4399227446.

Adding to 144240505 its reverse (505042441), we get a palindrome (649282946).

The spelling of 144240505 in words is "one hundred forty-four million, two hundred forty thousand, five hundred five".