144340243 has 4 divisors (see below), whose sum is σ = 147411360. Its totient is φ = 141269128.

The previous prime is 144340223. The next prime is 144340327. The reversal of 144340243 is 342043441.

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 144340243 - 2⁹ = 144339731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144340223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1535488 + ... + 1535581.

It is an arithmetic number, because the mean of its divisors is an integer number (36852840).

Almost surely, 2^144340243 is an apocalyptic number.

144340243 is a deficient number, since it is larger than the sum of its proper divisors (3071117).

144340243 is an equidigital number, since it uses as much as digits as its factorization.

144340243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3071116.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 144340243 is about 12014.1684273195. The cubic root of 144340243 is about 524.5607730737.

Adding to 144340243 its reverse (342043441), we get a palindrome (486383684).

The spelling of 144340243 in words is "one hundred forty-four million, three hundred forty thousand, two hundred forty-three".