144121503 has 16 divisors (see below), whose sum is σ = 200027520. Its totient is φ = 92189664.

The previous prime is 144121499. The next prime is 144121513. The reversal of 144121503 is 305121441.

It is not a de Polignac number, because 144121503 - 2² = 144121499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 144121503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144121513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9100 + ... + 19262.

It is an arithmetic number, because the mean of its divisors is an integer number (12501720).

Almost surely, 2^144121503 is an apocalyptic number.

144121503 is a deficient number, since it is larger than the sum of its proper divisors (55906017).

144121503 is a wasteful number, since it uses less digits than its factorization.

144121503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10358.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 144121503 is about 12005.0615575265. The cubic root of 144121503 is about 524.2956577416.

Adding to 144121503 its reverse (305121441), we get a palindrome (449242944).

The spelling of 144121503 in words is "one hundred forty-four million, one hundred twenty-one thousand, five hundred three".