240543542353243 has 8 divisors (see below), whose sum is σ = 241289873510400. Its totient is φ = 239797827239208.

The previous prime is 240543542353189. The next prime is 240543542353249. The reversal of 240543542353243 is 342353245345042.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240543542353243 is a prime.

It is a super-2 number, since 2×240543542353243² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240543542353249) 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, 153228633 + ... + 154790506.

It is an arithmetic number, because the mean of its divisors is an integer number (30161234188800).

Almost surely, 2^{240543542353243} is an apocalyptic number.

240543542353243 is a deficient number, since it is larger than the sum of its proper divisors (746331157157).

240543542353243 is a wasteful number, since it uses less digits than its factorization.

240543542353243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308021561.

The product of its (nonzero) digits is 20736000, while the sum is 49.

Adding to 240543542353243 its reverse (342353245345042), we get a palindrome (582896787698285).

The spelling of 240543542353243 in words is "two hundred forty trillion, five hundred forty-three billion, five hundred forty-two million, three hundred fifty-three thousand, two hundred forty-three".