204122 has 4 divisors (see below), whose sum is σ = 306186. Its totient is φ = 102060.

The previous prime is 204107. The next prime is 204133. The reversal of 204122 is 221402.

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., 175561 + 28561 = 419^2 + 169^2 .

It is an unprimeable number.

204122 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 as a sum of consecutive naturals, namely, 51029 + ... + 51032.

2²⁰⁴¹²² is an apocalyptic number.

204122 is a deficient number, since it is larger than the sum of its proper divisors (102064).

204122 is a wasteful number, since it uses less digits than its factorization.

204122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102063.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 204122 is about 451.7986277093. The cubic root of 204122 is about 58.8793858853.

Adding to 204122 its reverse (221402), we get a palindrome (425524).

The spelling of 204122 in words is "two hundred four thousand, one hundred twenty-two", and thus it is an iban number.