212430143 has 4 divisors (see below), whose sum is σ = 217611408. Its totient is φ = 207248880.

The previous prime is 212430137. The next prime is 212430167. The reversal of 212430143 is 341034212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212430143 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 (212430443) 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, 2590571 + ... + 2590652.

It is an arithmetic number, because the mean of its divisors is an integer number (54402852).

Almost surely, 2^212430143 is an apocalyptic number.

212430143 is a deficient number, since it is larger than the sum of its proper divisors (5181265).

212430143 is an equidigital number, since it uses as much as digits as its factorization.

212430143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5181264.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 212430143 is about 14574.9834648277. The cubic root of 212430143 is about 596.6761980868.

Adding to 212430143 its reverse (341034212), we get a palindrome (553464355).

The spelling of 212430143 in words is "two hundred twelve million, four hundred thirty thousand, one hundred forty-three".