129040519 has 2 divisors, whose sum is σ = 129040520. Its totient is φ = 129040518.

The previous prime is 129040453. The next prime is 129040537. The reversal of 129040519 is 915040921.

It is a strong prime.

It is an emirp because it is prime and its reverse (915040921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129040519 - 2¹⁵ = 129007751 is a prime.

It is a super-2 number, since 2×129040519² = 33302911087578722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129040579) 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, 64520259 + 64520260.

It is an arithmetic number, because the mean of its divisors is an integer number (64520260).

Almost surely, 2^129040519 is an apocalyptic number.

129040519 is a deficient number, since it is larger than the sum of its proper divisors (1).

129040519 is an equidigital number, since it uses as much as digits as its factorization.

129040519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 129040519 is about 11359.6003010669. The cubic root of 129040519 is about 505.3303318609.

The spelling of 129040519 in words is "one hundred twenty-nine million, forty thousand, five hundred nineteen".