129036433 has 2 divisors, whose sum is σ = 129036434. Its totient is φ = 129036432.

The previous prime is 129036431. The next prime is 129036437. The reversal of 129036433 is 334630921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90497169 + 38539264 = 9513^2 + 6208^2 .

It is a cyclic number.

It is not a de Polignac number, because 129036433 - 2¹ = 129036431 is a prime.

Together with 129036431, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 129036395 and 129036404.

It is not a weakly prime, because it can be changed into another prime (129036431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64518216 + 64518217.

It is an arithmetic number, because the mean of its divisors is an integer number (64518217).

Almost surely, 2^129036433 is an apocalyptic number.

It is an amenable number.

129036433 is a deficient number, since it is larger than the sum of its proper divisors (1).

129036433 is an equidigital number, since it uses as much as digits as its factorization.

129036433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 129036433 is about 11359.4204517660. The cubic root of 129036433 is about 505.3249981317.

The spelling of 129036433 in words is "one hundred twenty-nine million, thirty-six thousand, four hundred thirty-three".