243141543 has 6 divisors (see below), whose sum is σ = 351204464. Its totient is φ = 162094356.

The previous prime is 243141529. The next prime is 243141553. The reversal of 243141543 is 345141342.

It is a happy number.

243141543 is a `hidden beast` number, since 243 + 1 + 415 + 4 + 3 = 666.

It is not a de Polignac number, because 243141543 - 2⁴ = 243141527 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 (243141523) 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 5 ways as a sum of consecutive naturals, for example, 13507855 + ... + 13507872.

Almost surely, 2^243141543 is an apocalyptic number.

243141543 is a deficient number, since it is larger than the sum of its proper divisors (108062921).

243141543 is a wasteful number, since it uses less digits than its factorization.

243141543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27015733 (or 27015730 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 243141543 is about 15592.9966010386. The cubic root of 243141543 is about 624.1462844292.

Adding to 243141543 its reverse (345141342), we get a palindrome (588282885).

The spelling of 243141543 in words is "two hundred forty-three million, one hundred forty-one thousand, five hundred forty-three".