4243440240243 has 24 divisors (see below), whose sum is σ = 6502973490000. Its totient is φ = 2657214918144.

The previous prime is 4243440240239. The next prime is 4243440240251. The reversal of 4243440240243 is 3420420443424.

4243440240243 is a `hidden beast` number, since 4 + 2 + 4 + 3 + 4 + 402 + 4 + 0 + 243 = 666.

It is not a de Polignac number, because 4243440240243 - 2² = 4243440240239 is a prime.

It is a super-3 number, since 3×4243440240243³ (a number of 39 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4243440240198 and 4243440240207.

It is not an unprimeable number, because it can be changed into a prime (4243440240233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27714138 + ... + 27866831.

It is an arithmetic number, because the mean of its divisors is an integer number (270957228750).

Almost surely, 2^{4243440240243} is an apocalyptic number.

4243440240243 is a deficient number, since it is larger than the sum of its proper divisors (2259533249757).

4243440240243 is a wasteful number, since it uses less digits than its factorization.

4243440240243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55581491 (or 55581488 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 36.

Adding to 4243440240243 its reverse (3420420443424), we get a palindrome (7663860683667).

The spelling of 4243440240243 in words is "four trillion, two hundred forty-three billion, four hundred forty million, two hundred forty thousand, two hundred forty-three".