4205

4205 is a natural number, following 4204 and preceding 4206. In mathematics, it has prime factorization 5 × 29^2, making it an odd composite number and the product of a square of a prime and another prime.

Its divisors are 1, 5, 29, 145, 841, and 4205. There are six divisors, so the divisor-counting function τ(4205) = 6. The sum of divisors is σ(4205) = 5226, and the aliquot sum s(4205) = σ − n = 1021. Euler's totient φ(4205) = 3248.

In base representations, 4205 equals 0x106D in hexadecimal and 1000001101101 in binary. In Roman numerals, some representations render 4205 as MMMMCCV. The number is used in exercises and examples in number theory due to its factorization structure.