136943129 has 2 divisors, whose sum is σ = 136943130. Its totient is φ = 136943128.

The previous prime is 136943123. The next prime is 136943137. The reversal of 136943129 is 921349631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112933129 + 24010000 = 10627^2 + 4900^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136943129 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 136943092 and 136943101.

It is not a weakly prime, because it can be changed into another prime (136943123) 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, 68471564 + 68471565.

It is an arithmetic number, because the mean of its divisors is an integer number (68471565).

Almost surely, 2^136943129 is an apocalyptic number.

It is an amenable number.

136943129 is a deficient number, since it is larger than the sum of its proper divisors (1).

136943129 is an equidigital number, since it uses as much as digits as its factorization.

136943129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 38.

The square root of 136943129 is about 11702.2702498276. The cubic root of 136943129 is about 515.4423308813.

The spelling of 136943129 in words is "one hundred thirty-six million, nine hundred forty-three thousand, one hundred twenty-nine".