204240129 has 8 divisors (see below), whose sum is σ = 272412000. Its totient is φ = 136114176.

The previous prime is 204240109. The next prime is 204240131. The reversal of 204240129 is 921042402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 204240129 - 2⁵ = 204240097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204240099 and 204240108.

It is not an unprimeable number, because it can be changed into a prime (204240109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 769 + ... + 20225.

It is an arithmetic number, because the mean of its divisors is an integer number (34051500).

Almost surely, 2^204240129 is an apocalyptic number.

It is an amenable number.

204240129 is a deficient number, since it is larger than the sum of its proper divisors (68171871).

204240129 is a wasteful number, since it uses less digits than its factorization.

204240129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22959.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 204240129 is about 14291.2605812084. The cubic root of 204240129 is about 588.9074187450.

The spelling of 204240129 in words is "two hundred four million, two hundred forty thousand, one hundred twenty-nine".