212400543 has 8 divisors (see below), whose sum is σ = 285102000. Its totient is φ = 140649728.

The previous prime is 212400511. The next prime is 212400557. The reversal of 212400543 is 345004212.

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

It is a cyclic number.

It is not a de Polignac number, because 212400543 - 2⁵ = 212400511 is a prime.

It is a super-2 number, since 2×212400543² = 90227981333389698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212400443) 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, 237138 + ... + 238031.

It is an arithmetic number, because the mean of its divisors is an integer number (35637750).

Almost surely, 2^212400543 is an apocalyptic number.

212400543 is a deficient number, since it is larger than the sum of its proper divisors (72701457).

212400543 is a wasteful number, since it uses less digits than its factorization.

212400543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475321.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 212400543 is about 14573.9679909076. The cubic root of 212400543 is about 596.6484831941.

Adding to 212400543 its reverse (345004212), we get a palindrome (557404755).

The spelling of 212400543 in words is "two hundred twelve million, four hundred thousand, five hundred forty-three".