204012407 has 2 divisors, whose sum is σ = 204012408. Its totient is φ = 204012406.

The previous prime is 204012397. The next prime is 204012421. The reversal of 204012407 is 704210402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204012407 - 2⁶ = 204012343 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204012307) 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 as a sum of consecutive naturals, namely, 102006203 + 102006204.

It is an arithmetic number, because the mean of its divisors is an integer number (102006204).

Almost surely, 2^204012407 is an apocalyptic number.

204012407 is a deficient number, since it is larger than the sum of its proper divisors (1).

204012407 is an equidigital number, since it uses as much as digits as its factorization.

204012407 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 204012407 is about 14283.2911823571. The cubic root of 204012407 is about 588.6884656126.

Adding to 204012407 its reverse (704210402), we get a palindrome (908222809).

The spelling of 204012407 in words is "two hundred four million, twelve thousand, four hundred seven".