212543041 has 4 divisors (see below), whose sum is σ = 212672512. Its totient is φ = 212413572.

The previous prime is 212542999. The next prime is 212543047. The reversal of 212543041 is 140345212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212543041 - 2⁹ = 212542529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212543047) 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, 62241 + ... + 65566.

It is an arithmetic number, because the mean of its divisors is an integer number (53168128).

Almost surely, 2^212543041 is an apocalyptic number.

It is an amenable number.

212543041 is a deficient number, since it is larger than the sum of its proper divisors (129471).

212543041 is a wasteful number, since it uses less digits than its factorization.

212543041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129470.

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

The square root of 212543041 is about 14578.8559564871. The cubic root of 212543041 is about 596.7818824282.

Adding to 212543041 its reverse (140345212), we get a palindrome (352888253).

The spelling of 212543041 in words is "two hundred twelve million, five hundred forty-three thousand, forty-one".