406212 has 12 divisors (see below), whose sum is σ = 947856. Its totient is φ = 135400.

The previous prime is 406207. The next prime is 406247. The reversal of 406212 is 212604.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 406191 and 406200.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 406212.

It is an unprimeable number.

406212 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, 16914 + ... + 16937.

It is an arithmetic number, because the mean of its divisors is an integer number (78988).

2⁴⁰⁶²¹² is an apocalyptic number.

It is an amenable number.

406212 is an abundant number, since it is smaller than the sum of its proper divisors (541644).

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

406212 is a wasteful number, since it uses less digits than its factorization.

406212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33858 (or 33856 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 406212 is about 637.3476288494. The cubic root of 406212 is about 74.0600924105.

Adding to 406212 its reverse (212604), we get a palindrome (618816).

The spelling of 406212 in words is "four hundred six thousand, two hundred twelve".