129340719 has 20 divisors (see below), whose sum is σ = 193519656. Its totient is φ = 86090256.

The previous prime is 129340703. The next prime is 129340721. The reversal of 129340719 is 917043921.

It is not a de Polignac number, because 129340719 - 2⁴ = 129340703 is a prime.

It is a super-2 number, since 2×129340719² = 33458043182873922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129340769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 93517 + ... + 94889.

Almost surely, 2^129340719 is an apocalyptic number.

129340719 is a deficient number, since it is larger than the sum of its proper divisors (64178937).

129340719 is a wasteful number, since it uses less digits than its factorization.

129340719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2548 (or 2539 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 129340719 is about 11372.8061181047. The cubic root of 129340719 is about 505.7218953794.

The spelling of 129340719 in words is "one hundred twenty-nine million, three hundred forty thousand, seven hundred nineteen".