212142 has 16 divisors (see below), whose sum is σ = 484992. Its totient is φ = 60600.

The previous prime is 212141. The next prime is 212161. The reversal of 212142 is 241212.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 212142.

It is not an unprimeable number, because it can be changed into a prime (212141) 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 7 ways as a sum of consecutive naturals, for example, 2484 + ... + 2567.

It is an arithmetic number, because the mean of its divisors is an integer number (30312).

2²¹²¹⁴² is an apocalyptic number.

212142 is an abundant number, since it is smaller than the sum of its proper divisors (272850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212142 is a wasteful number, since it uses less digits than its factorization.

212142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5063.

The product of its digits is 32, while the sum is 12.

The square root of 212142 is about 460.5887536621. The cubic root of 212142 is about 59.6406296240.

Adding to 212142 its reverse (241212), we get a palindrome (453354).

The spelling of 212142 in words is "two hundred twelve thousand, one hundred forty-two", and thus it is an iban number.