204240077 has 2 divisors, whose sum is σ = 204240078. Its totient is φ = 204240076.

The previous prime is 204240061. The next prime is 204240089. The reversal of 204240077 is 770042402.

204240077 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 can be written as a sum of positive squares in only one way, i.e., 204232681 + 7396 = 14291^2 + 86^2 .

It is a cyclic number.

It is not a de Polignac number, because 204240077 - 2⁴ = 204240061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204240007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102120038 + 102120039.

It is an arithmetic number, because the mean of its divisors is an integer number (102120039).

Almost surely, 2^204240077 is an apocalyptic number.

It is an amenable number.

204240077 is a deficient number, since it is larger than the sum of its proper divisors (1).

204240077 is an equidigital number, since it uses as much as digits as its factorization.

204240077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 204240077 is about 14291.2587619146. The cubic root of 204240077 is about 588.9073687660.

Adding to 204240077 its reverse (770042402), we get a palindrome (974282479).

The spelling of 204240077 in words is "two hundred four million, two hundred forty thousand, seventy-seven".