204036139 has 2 divisors, whose sum is σ = 204036140. Its totient is φ = 204036138.

The previous prime is 204036137. The next prime is 204036163. The reversal of 204036139 is 931630402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204036139 - 2¹ = 204036137 is a prime.

Together with 204036137, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (204036137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102018069 + 102018070.

It is an arithmetic number, because the mean of its divisors is an integer number (102018070).

Almost surely, 2^204036139 is an apocalyptic number.

204036139 is a deficient number, since it is larger than the sum of its proper divisors (1).

204036139 is an equidigital number, since it uses as much as digits as its factorization.

204036139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 204036139 is about 14284.1219191100. The cubic root of 204036139 is about 588.7112913698.

The spelling of 204036139 in words is "two hundred four million, thirty-six thousand, one hundred thirty-nine".