212434205 has 8 divisors (see below), whose sum is σ = 261811032. Its totient is φ = 165354048.

The previous prime is 212434181. The next prime is 212434207. The reversal of 212434205 is 502434212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 111049444 + 101384761 = 10538^2 + 10069^2 .

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 212434205 - 2¹² = 212430109 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 (212434207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 573962 + ... + 574331.

It is an arithmetic number, because the mean of its divisors is an integer number (32726379).

Almost surely, 2^212434205 is an apocalyptic number.

It is an amenable number.

212434205 is a deficient number, since it is larger than the sum of its proper divisors (49376827).

212434205 is a wasteful number, since it uses less digits than its factorization.

212434205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148335.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 212434205 is about 14575.1228125186. The cubic root of 212434205 is about 596.6800011931.

Adding to 212434205 its reverse (502434212), we get a palindrome (714868417).

The spelling of 212434205 in words is "two hundred twelve million, four hundred thirty-four thousand, two hundred five".