136120609 has 2 divisors, whose sum is σ = 136120610. Its totient is φ = 136120608.

The previous prime is 136120603. The next prime is 136120613. The reversal of 136120609 is 906021631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135024400 + 1096209 = 11620^2 + 1047^2 .

It is a cyclic number.

It is not a de Polignac number, because 136120609 - 2²⁷ = 1902881 is a prime.

It is not a weakly prime, because it can be changed into another prime (136120603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68060304 + 68060305.

It is an arithmetic number, because the mean of its divisors is an integer number (68060305).

Almost surely, 2^136120609 is an apocalyptic number.

It is an amenable number.

136120609 is a deficient number, since it is larger than the sum of its proper divisors (1).

136120609 is an equidigital number, since it uses as much as digits as its factorization.

136120609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 136120609 is about 11667.0737119468. The cubic root of 136120609 is about 514.4082926767.

The spelling of 136120609 in words is "one hundred thirty-six million, one hundred twenty thousand, six hundred nine".