204600129 has 4 divisors (see below), whose sum is σ = 272800176. Its totient is φ = 136400084.

The previous prime is 204600119. The next prime is 204600139. The reversal of 204600129 is 921006402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (204600119) and next prime (204600139).

It is a cyclic number.

It is not a de Polignac number, because 204600129 - 2⁷ = 204600001 is a prime.

It is a super-2 number, since 2×204600129² = 83722425573633282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204600099 and 204600108.

It is not an unprimeable number, because it can be changed into a prime (204600119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34100019 + ... + 34100024.

It is an arithmetic number, because the mean of its divisors is an integer number (68200044).

Almost surely, 2^204600129 is an apocalyptic number.

It is an amenable number.

204600129 is a deficient number, since it is larger than the sum of its proper divisors (68200047).

204600129 is an equidigital number, since it uses as much as digits as its factorization.

204600129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68200046.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 204600129 is about 14303.8501460271. The cubic root of 204600129 is about 589.2532244892.

The spelling of 204600129 in words is "two hundred four million, six hundred thousand, one hundred twenty-nine".