242131451543 has 4 divisors (see below), whose sum is σ = 242141994240. Its totient is φ = 242120908848.

The previous prime is 242131451501. The next prime is 242131451563. The reversal of 242131451543 is 345154131242.

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

It is a cyclic number.

It is not a de Polignac number, because 242131451543 - 2³⁰ = 241057709719 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 (242131451563) 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, 5236823 + ... + 5282856.

It is an arithmetic number, because the mean of its divisors is an integer number (60535498560).

Almost surely, 2^242131451543 is an apocalyptic number.

242131451543 is a deficient number, since it is larger than the sum of its proper divisors (10542697).

242131451543 is a wasteful number, since it uses less digits than its factorization.

242131451543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10542696.

The product of its digits is 57600, while the sum is 35.

Adding to 242131451543 its reverse (345154131242), we get a palindrome (587285582785).

The spelling of 242131451543 in words is "two hundred forty-two billion, one hundred thirty-one million, four hundred fifty-one thousand, five hundred forty-three".