204212423 has 8 divisors (see below), whose sum is σ = 213444096. Its totient is φ = 195010200.

The previous prime is 204212419. The next prime is 204212441. The reversal of 204212423 is 324212402.

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

It is a cyclic number.

It is not a de Polignac number, because 204212423 - 2² = 204212419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204212395 and 204212404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204212413) 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, 7478 + ... + 21548.

It is an arithmetic number, because the mean of its divisors is an integer number (26680512).

Almost surely, 2^204212423 is an apocalyptic number.

204212423 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

204212423 is a deficient number, since it is larger than the sum of its proper divisors (9231673).

204212423 is a wasteful number, since it uses less digits than its factorization.

204212423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14725.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 204212423 is about 14290.2912146674. The cubic root of 204212423 is about 588.8807883160.

Adding to 204212423 its reverse (324212402), we get a palindrome (528424825).

The spelling of 204212423 in words is "two hundred four million, two hundred twelve thousand, four hundred twenty-three".