212440234 has 8 divisors (see below), whose sum is σ = 318781188. Its totient is φ = 106179840.

The previous prime is 212440231. The next prime is 212440289. The reversal of 212440234 is 432044212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 195916009 + 16524225 = 13997^2 + 4065^2 .

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

It is not an unprimeable number, because it can be changed into a prime (212440231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13047 + ... + 24394.

Almost surely, 2^212440234 is an apocalyptic number.

212440234 is a deficient number, since it is larger than the sum of its proper divisors (106340954).

212440234 is a wasteful number, since it uses less digits than its factorization.

212440234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40280.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 212440234 is about 14575.3296360666. The cubic root of 212440234 is about 596.6856458423.

Adding to 212440234 its reverse (432044212), we get a palindrome (644484446).

The spelling of 212440234 in words is "two hundred twelve million, four hundred forty thousand, two hundred thirty-four".