129019361 has 2 divisors, whose sum is σ = 129019362. Its totient is φ = 129019360.

The previous prime is 129019313. The next prime is 129019379. The reversal of 129019361 is 163910921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76020961 + 52998400 = 8719^2 + 7280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129019361 is a prime.

It is not a weakly prime, because it can be changed into another prime (129019381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64509680 + 64509681.

It is an arithmetic number, because the mean of its divisors is an integer number (64509681).

Almost surely, 2^129019361 is an apocalyptic number.

It is an amenable number.

129019361 is a deficient number, since it is larger than the sum of its proper divisors (1).

129019361 is an equidigital number, since it uses as much as digits as its factorization.

129019361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 129019361 is about 11358.6689801226. The cubic root of 129019361 is about 505.3027116900.

The spelling of 129019361 in words is "one hundred twenty-nine million, nineteen thousand, three hundred sixty-one".