242011543 has 4 divisors (see below), whose sum is σ = 252533808. Its totient is φ = 231489280.

The previous prime is 242011537. The next prime is 242011547. The reversal of 242011543 is 345110242.

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 242011543 - 2¹³ = 242003351 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242011547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5261098 + ... + 5261143.

It is an arithmetic number, because the mean of its divisors is an integer number (63133452).

Almost surely, 2^242011543 is an apocalyptic number.

242011543 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

242011543 is a deficient number, since it is larger than the sum of its proper divisors (10522265).

242011543 is a wasteful number, since it uses less digits than its factorization.

242011543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10522264.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 242011543 is about 15556.7201877517. The cubic root of 242011543 is about 623.1778763068.

Adding to 242011543 its reverse (345110242), we get a palindrome (587121785).

The spelling of 242011543 in words is "two hundred forty-two million, eleven thousand, five hundred forty-three".