243241143421 has 8 divisors (see below), whose sum is σ = 243910775864. Its totient is φ = 242572008960.

The previous prime is 243241143359. The next prime is 243241143449. The reversal of 243241143421 is 124341142342.

It is a happy number.

243241143421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2228878521 + 241012264900 = 47211^2 + 490930^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243241143421 - 2⁹ = 243241142909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243241143491) 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 7 ways as a sum of consecutive naturals, for example, 864535 + ... + 1110811.

It is an arithmetic number, because the mean of its divisors is an integer number (30488846983).

Almost surely, 2^243241143421 is an apocalyptic number.

It is an amenable number.

243241143421 is a deficient number, since it is larger than the sum of its proper divisors (669632443).

243241143421 is a wasteful number, since it uses less digits than its factorization.

243241143421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248991.

The product of its digits is 18432, while the sum is 31.

Adding to 243241143421 its reverse (124341142342), we get a palindrome (367582285763).

The spelling of 243241143421 in words is "two hundred forty-three billion, two hundred forty-one million, one hundred forty-three thousand, four hundred twenty-one".