243440242401 has 8 divisors (see below), whose sum is σ = 324589277824. Its totient is φ = 162292350960.

The previous prime is 243440242379. The next prime is 243440242429. The reversal of 243440242401 is 104242044342.

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

It is not a de Polignac number, because 243440242401 - 2¹⁸ = 243439980257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243440244401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 626040 + ... + 937446.

It is an arithmetic number, because the mean of its divisors is an integer number (40573659728).

Almost surely, 2^243440242401 is an apocalyptic number.

It is an amenable number.

243440242401 is a deficient number, since it is larger than the sum of its proper divisors (81149035423).

243440242401 is a wasteful number, since it uses less digits than its factorization.

243440242401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571991.

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 243440242401 its reverse (104242044342), we get a palindrome (347682286743).

The spelling of 243440242401 in words is "two hundred forty-three billion, four hundred forty million, two hundred forty-two thousand, four hundred one".