212242 has 4 divisors (see below), whose sum is σ = 318366. Its totient is φ = 106120.

The previous prime is 212239. The next prime is 212243. The reversal of 212242 is 242212.

212242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 145161 + 67081 = 381^2 + 259^2 .

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (212243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53059 + ... + 53062.

2²¹²²⁴² is an apocalyptic number.

212242 is a deficient number, since it is larger than the sum of its proper divisors (106124).

212242 is a wasteful number, since it uses less digits than its factorization.

212242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106123.

The product of its digits is 64, while the sum is 13.

The square root of 212242 is about 460.6972975827. The cubic root of 212242 is about 59.6499993325.

Adding to 212242 its reverse (242212), we get a palindrome (454454).

It can be divided in two parts, 212 and 242, that added together give a palindrome (454).

The spelling of 212242 in words is "two hundred twelve thousand, two hundred forty-two", and thus it is an iban number.