212842 has 16 divisors (see below), whose sum is σ = 381312. Its totient is φ = 87120.

The previous prime is 212837. The next prime is 212843. The reversal of 212842 is 248212.

212842 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212843) 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, 9 + ... + 652.

It is an arithmetic number, because the mean of its divisors is an integer number (23832).

2²¹²⁸⁴² is an apocalyptic number.

212842 is a deficient number, since it is larger than the sum of its proper divisors (168470).

212842 is a wasteful number, since it uses less digits than its factorization.

212842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693.

The product of its digits is 256, while the sum is 19.

The square root of 212842 is about 461.3480248142. The cubic root of 212842 is about 59.7061558689.

The spelling of 212842 in words is "two hundred twelve thousand, eight hundred forty-two".