212342433 has 16 divisors (see below), whose sum is σ = 290433600. Its totient is φ = 137943104.

The previous prime is 212342369. The next prime is 212342443. The reversal of 212342433 is 334243212.

It is a cyclic number.

It is not a de Polignac number, because 212342433 - 2⁶ = 212342369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212342443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19210 + ... + 28172.

It is an arithmetic number, because the mean of its divisors is an integer number (18152100).

Almost surely, 2^212342433 is an apocalyptic number.

It is an amenable number.

212342433 is a deficient number, since it is larger than the sum of its proper divisors (78091167).

212342433 is a wasteful number, since it uses less digits than its factorization.

212342433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9168.

The product of its digits is 3456, while the sum is 24.

The square root of 212342433 is about 14571.9742313799. The cubic root of 212342433 is about 596.5940665007.

Adding to 212342433 its reverse (334243212), we get a palindrome (546585645).

The spelling of 212342433 in words is "two hundred twelve million, three hundred forty-two thousand, four hundred thirty-three".