243203420001 has 8 divisors (see below), whose sum is σ = 324273793120. Its totient is φ = 162134330112.

The previous prime is 243203419999. The next prime is 243203420029. The reversal of 243203420001 is 100024302342.

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

It is not a de Polignac number, because 243203420001 - 2¹ = 243203419999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243203420001.

It is not an unprimeable number, because it can be changed into a prime (243203420071) 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 7 ways as a sum of consecutive naturals, for example, 284670 + ... + 753288.

It is an arithmetic number, because the mean of its divisors is an integer number (40534224140).

Almost surely, 2^243203420001 is an apocalyptic number.

It is an amenable number.

243203420001 is a deficient number, since it is larger than the sum of its proper divisors (81070373119).

243203420001 is a wasteful number, since it uses less digits than its factorization.

243203420001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641615.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 243203420001 its reverse (100024302342), we get a palindrome (343227722343).

The spelling of 243203420001 in words is "two hundred forty-three billion, two hundred three million, four hundred twenty thousand, one".