204040007 has 2 divisors, whose sum is σ = 204040008. Its totient is φ = 204040006.

The previous prime is 204040003. The next prime is 204040009. The reversal of 204040007 is 700040402.

204040007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204040007 - 2² = 204040003 is a prime.

Together with 204040009, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204040003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102020003 + 102020004.

It is an arithmetic number, because the mean of its divisors is an integer number (102020004).

Almost surely, 2^204040007 is an apocalyptic number.

204040007 is a deficient number, since it is larger than the sum of its proper divisors (1).

204040007 is an equidigital number, since it uses as much as digits as its factorization.

204040007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 204040007 is about 14284.2573135603. The cubic root of 204040007 is about 588.7150114965.

Adding to 204040007 its reverse (700040402), we get a palindrome (904080409).

The spelling of 204040007 in words is "two hundred four million, forty thousand, seven".