204134237 has 2 divisors, whose sum is σ = 204134238. Its totient is φ = 204134236.

The previous prime is 204134197. The next prime is 204134251. The reversal of 204134237 is 732431402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109286116 + 94848121 = 10454^2 + 9739^2 .

It is a cyclic number.

It is not a de Polignac number, because 204134237 - 2⁶ = 204134173 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 (204134297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102067118 + 102067119.

It is an arithmetic number, because the mean of its divisors is an integer number (102067119).

Almost surely, 2^204134237 is an apocalyptic number.

It is an amenable number.

204134237 is a deficient number, since it is larger than the sum of its proper divisors (1).

204134237 is an equidigital number, since it uses as much as digits as its factorization.

204134237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 204134237 is about 14287.5553192280. Note that the first 3 decimals coincide. The cubic root of 204134237 is about 588.8056245724.

Adding to 204134237 its reverse (732431402), we get a palindrome (936565639).

The spelling of 204134237 in words is "two hundred four million, one hundred thirty-four thousand, two hundred thirty-seven".