243140424299 has 4 divisors (see below), whose sum is σ = 248313624864. Its totient is φ = 237967223736.

The previous prime is 243140424277. The next prime is 243140424301. The reversal of 243140424299 is 992424041342.

243140424299 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243140424299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243140423299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2586600212 + ... + 2586600305.

It is an arithmetic number, because the mean of its divisors is an integer number (62078406216).

Almost surely, 2^243140424299 is an apocalyptic number.

243140424299 is a deficient number, since it is larger than the sum of its proper divisors (5173200565).

243140424299 is an equidigital number, since it uses as much as digits as its factorization.

243140424299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5173200564.

The product of its (nonzero) digits is 497664, while the sum is 44.

The spelling of 243140424299 in words is "two hundred forty-three billion, one hundred forty million, four hundred twenty-four thousand, two hundred ninety-nine".