212432443 has 2 divisors, whose sum is σ = 212432444. Its totient is φ = 212432442.

The previous prime is 212432419. The next prime is 212432477. The reversal of 212432443 is 344234212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212432443 - 2²¹ = 210335291 is a prime.

It is not a weakly prime, because it can be changed into another prime (212432413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106216221 + 106216222.

It is an arithmetic number, because the mean of its divisors is an integer number (106216222).

Almost surely, 2^212432443 is an apocalyptic number.

212432443 is a deficient number, since it is larger than the sum of its proper divisors (1).

212432443 is an equidigital number, since it uses as much as digits as its factorization.

212432443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 25.

The square root of 212432443 is about 14575.0623669335. The cubic root of 212432443 is about 596.6783515011.

Adding to 212432443 its reverse (344234212), we get a palindrome (556666655).

The spelling of 212432443 in words is "two hundred twelve million, four hundred thirty-two thousand, four hundred forty-three".