204102 has 48 divisors (see below), whose sum is σ = 505440. Its totient is φ = 59136.

The previous prime is 204101. The next prime is 204107. The reversal of 204102 is 201402.

204102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7024 + ... + 7052.

It is an arithmetic number, because the mean of its divisors is an integer number (10530).

2²⁰⁴¹⁰² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252720).

204102 is an abundant number, since it is smaller than the sum of its proper divisors (301338).

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

204102 is a wasteful number, since it uses less digits than its factorization.

204102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 204102 is about 451.7764934124. The cubic root of 204102 is about 58.8774628096.

Adding to 204102 its reverse (201402), we get a palindrome (405504).

The spelling of 204102 in words is "two hundred four thousand, one hundred two", and thus it is an iban number.