204435423 has 12 divisors (see below), whose sum is σ = 296421840. Its totient is φ = 135770496.

The previous prime is 204435409. The next prime is 204435437. The reversal of 204435423 is 324534402.

204435423 is a `hidden beast` number, since 204 + 4 + 35 + 423 = 666.

It is an interprime number because it is at equal distance from previous prime (204435409) and next prime (204435437).

It is not a de Polignac number, because 204435423 - 2¹³ = 204427231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204435463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40818 + ... + 45551.

It is an arithmetic number, because the mean of its divisors is an integer number (24701820).

Almost surely, 2^204435423 is an apocalyptic number.

204435423 is a deficient number, since it is larger than the sum of its proper divisors (91986417).

204435423 is a wasteful number, since it uses less digits than its factorization.

204435423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86638 (or 86635 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 204435423 is about 14298.0915859425. The cubic root of 204435423 is about 589.0950629786.

Adding to 204435423 its reverse (324534402), we get a palindrome (528969825).

The spelling of 204435423 in words is "two hundred four million, four hundred thirty-five thousand, four hundred twenty-three".