136847129 has 2 divisors, whose sum is σ = 136847130. Its totient is φ = 136847128.

The previous prime is 136847119. The next prime is 136847149. The reversal of 136847129 is 921748631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69689104 + 67158025 = 8348^2 + 8195^2 .

It is a cyclic number.

It is not a de Polignac number, because 136847129 - 2¹² = 136843033 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136847119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68423564 + 68423565.

It is an arithmetic number, because the mean of its divisors is an integer number (68423565).

Almost surely, 2^136847129 is an apocalyptic number.

It is an amenable number.

136847129 is a deficient number, since it is larger than the sum of its proper divisors (1).

136847129 is an equidigital number, since it uses as much as digits as its factorization.

136847129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 41.

The square root of 136847129 is about 11698.1677625173. The cubic root of 136847129 is about 515.3218574376.

The spelling of 136847129 in words is "one hundred thirty-six million, eight hundred forty-seven thousand, one hundred twenty-nine".