243340144 has 40 divisors (see below), whose sum is σ = 497426000. Its totient is φ = 115001856.

The previous prime is 243340133. The next prime is 243340169. The reversal of 243340144 is 441043342.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214972 + ... + 216100.

It is an arithmetic number, because the mean of its divisors is an integer number (12435650).

Almost surely, 2^243340144 is an apocalyptic number.

It is an amenable number.

243340144 is an abundant number, since it is smaller than the sum of its proper divisors (254085856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243340144 is a wasteful number, since it uses less digits than its factorization.

243340144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1865 (or 1859 counting only the distinct ones).

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

The square root of 243340144 is about 15599.3635767617. The cubic root of 243340144 is about 624.3161749662.

Adding to 243340144 its reverse (441043342), we get a palindrome (684383486).

The spelling of 243340144 in words is "two hundred forty-three million, three hundred forty thousand, one hundred forty-four".