204126655 has 4 divisors (see below), whose sum is σ = 244951992. Its totient is φ = 163301320.

The previous prime is 204126653. The next prime is 204126683. The reversal of 204126655 is 556621402.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 204126655 - 2¹ = 204126653 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204126653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20412661 + ... + 20412670.

It is an arithmetic number, because the mean of its divisors is an integer number (61237998).

Almost surely, 2^204126655 is an apocalyptic number.

204126655 is a deficient number, since it is larger than the sum of its proper divisors (40825337).

204126655 is an equidigital number, since it uses as much as digits as its factorization.

204126655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40825336.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 204126655 is about 14287.2899809586. The cubic root of 204126655 is about 588.7983346316.

The spelling of 204126655 in words is "two hundred four million, one hundred twenty-six thousand, six hundred fifty-five".