212440543 has 8 divisors (see below), whose sum is σ = 243013280. Its totient is φ = 181923840.

The previous prime is 212440537. The next prime is 212440549. The reversal of 212440543 is 345044212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (212440537) and next prime (212440549).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212440543 - 2²¹ = 210343391 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 (212440549) 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 7 ways as a sum of consecutive naturals, for example, 5538 + ... + 21343.

It is an arithmetic number, because the mean of its divisors is an integer number (30376660).

Almost surely, 2^212440543 is an apocalyptic number.

212440543 is a deficient number, since it is larger than the sum of its proper divisors (30572737).

212440543 is a wasteful number, since it uses less digits than its factorization.

212440543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28017.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 212440543 is about 14575.3402361660. The cubic root of 212440543 is about 596.6859351406.

Adding to 212440543 its reverse (345044212), we get a palindrome (557484755).

The spelling of 212440543 in words is "two hundred twelve million, four hundred forty thousand, five hundred forty-three".