144240503 has 4 divisors (see below), whose sum is σ = 157353288. Its totient is φ = 131127720.

The previous prime is 144240497. The next prime is 144240511. The reversal of 144240503 is 305042441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 144240503 - 2⁸ = 144240247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144240553) 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, 6556376 + ... + 6556397.

It is an arithmetic number, because the mean of its divisors is an integer number (39338322).

Almost surely, 2^144240503 is an apocalyptic number.

144240503 is a deficient number, since it is larger than the sum of its proper divisors (13112785).

144240503 is a wasteful number, since it uses less digits than its factorization.

144240503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13112784.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 144240503 is about 12010.0167776735. The cubic root of 144240503 is about 524.4399203206.

Adding to 144240503 its reverse (305042441), we get a palindrome (449282944).

The spelling of 144240503 in words is "one hundred forty-four million, two hundred forty thousand, five hundred three".