204126997 has 2 divisors, whose sum is σ = 204126998. Its totient is φ = 204126996.

The previous prime is 204126983. The next prime is 204127031. The reversal of 204126997 is 799621402.

204126997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201611601 + 2515396 = 14199^2 + 1586^2 .

It is a cyclic number.

It is not a de Polignac number, because 204126997 - 2²⁷ = 69909269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204126697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102063498 + 102063499.

It is an arithmetic number, because the mean of its divisors is an integer number (102063499).

Almost surely, 2^204126997 is an apocalyptic number.

It is an amenable number.

204126997 is a deficient number, since it is larger than the sum of its proper divisors (1).

204126997 is an equidigital number, since it uses as much as digits as its factorization.

204126997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 204126997 is about 14287.3019496335. The cubic root of 204126997 is about 588.7986634617.

The spelling of 204126997 in words is "two hundred four million, one hundred twenty-six thousand, nine hundred ninety-seven".