204100427 has 2 divisors, whose sum is σ = 204100428. Its totient is φ = 204100426.

The previous prime is 204100423. The next prime is 204100439. The reversal of 204100427 is 724001402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204100427 - 2² = 204100423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204100399 and 204100408.

It is not a weakly prime, because it can be changed into another prime (204100423) 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 as a sum of consecutive naturals, namely, 102050213 + 102050214.

It is an arithmetic number, because the mean of its divisors is an integer number (102050214).

Almost surely, 2^204100427 is an apocalyptic number.

204100427 is a deficient number, since it is larger than the sum of its proper divisors (1).

204100427 is an equidigital number, since it uses as much as digits as its factorization.

204100427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 204100427 is about 14286.3720727132. The cubic root of 204100427 is about 588.7731155437.

Adding to 204100427 its reverse (724001402), we get a palindrome (928101829).

The spelling of 204100427 in words is "two hundred four million, one hundred thousand, four hundred twenty-seven".