212542 has 8 divisors (see below), whose sum is σ = 347832. Its totient is φ = 96600.

The previous prime is 212507. The next prime is 212557. The reversal of 212542 is 245212.

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

It is a congruent number.

It is an unprimeable number.

212542 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4809 + ... + 4852.

It is an arithmetic number, because the mean of its divisors is an integer number (43479).

2²¹²⁵⁴² is an apocalyptic number.

212542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212542 is a deficient number, since it is larger than the sum of its proper divisors (135290).

212542 is a wasteful number, since it uses less digits than its factorization.

212542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9674.

The product of its digits is 160, while the sum is 16.

The square root of 212542 is about 461.0227760100. The cubic root of 212542 is about 59.6780908114.

Adding to 212542 its reverse (245212), we get a palindrome (457754).

It can be divided in two parts, 2 and 12542, that added together give a square (12544 = 112²).

The spelling of 212542 in words is "two hundred twelve thousand, five hundred forty-two".