144042505 has 8 divisors (see below), whose sum is σ = 175219272. Its totient is φ = 113655168.

The previous prime is 144042497. The next prime is 144042527. The reversal of 144042505 is 505240441.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 34798201 + 109244304 = 5899^2 + 10452^2 .

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 144042505 - 2³ = 144042497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 144042505.

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, 196954 + ... + 197683.

It is an arithmetic number, because the mean of its divisors is an integer number (21902409).

Almost surely, 2^144042505 is an apocalyptic number.

It is an amenable number.

144042505 is a deficient number, since it is larger than the sum of its proper divisors (31176767).

144042505 is an equidigital number, since it uses as much as digits as its factorization.

144042505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394715.

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

The square root of 144042505 is about 12001.7709109948. The cubic root of 144042505 is about 524.1998453485.

Adding to 144042505 its reverse (505240441), we get a palindrome (649282946).

The spelling of 144042505 in words is "one hundred forty-four million, forty-two thousand, five hundred five".