144421503 has 4 divisors (see below), whose sum is σ = 192562008. Its totient is φ = 96281000.

The previous prime is 144421499. The next prime is 144421507. The reversal of 144421503 is 305124441.

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

It is an interprime number because it is at equal distance from previous prime (144421499) and next prime (144421507).

It is a cyclic number.

It is not a de Polignac number, because 144421503 - 2² = 144421499 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144421507) 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, 24070248 + ... + 24070253.

It is an arithmetic number, because the mean of its divisors is an integer number (48140502).

Almost surely, 2^144421503 is an apocalyptic number.

144421503 is a deficient number, since it is larger than the sum of its proper divisors (48140505).

144421503 is an equidigital number, since it uses as much as digits as its factorization.

144421503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48140504.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 144421503 is about 12017.5497918669. The cubic root of 144421503 is about 524.6591928697.

Adding to 144421503 its reverse (305124441), we get a palindrome (449545944).

The spelling of 144421503 in words is "one hundred forty-four million, four hundred twenty-one thousand, five hundred three".