242440513543 has 4 divisors (see below), whose sum is σ = 256701720240. Its totient is φ = 228179306848.

The previous prime is 242440513519. The next prime is 242440513607. The reversal of 242440513543 is 345315044242.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242440513543 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 (242440513243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7130603323 + ... + 7130603356.

It is an arithmetic number, because the mean of its divisors is an integer number (64175430060).

Almost surely, 2^242440513543 is an apocalyptic number.

242440513543 is a deficient number, since it is larger than the sum of its proper divisors (14261206697).

242440513543 is a wasteful number, since it uses less digits than its factorization.

242440513543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14261206696.

The product of its (nonzero) digits is 230400, while the sum is 37.

Adding to 242440513543 its reverse (345315044242), we get a palindrome (587755557785).

The spelling of 242440513543 in words is "two hundred forty-two billion, four hundred forty million, five hundred thirteen thousand, five hundred forty-three".