129006719 has 2 divisors, whose sum is σ = 129006720. Its totient is φ = 129006718.

The previous prime is 129006707. The next prime is 129006737. The reversal of 129006719 is 917600921.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129006719 is a prime.

It is a super-2 number, since 2×129006719² = 33285467094289922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129006749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64503359 + 64503360.

It is an arithmetic number, because the mean of its divisors is an integer number (64503360).

Almost surely, 2^129006719 is an apocalyptic number.

129006719 is a deficient number, since it is larger than the sum of its proper divisors (1).

129006719 is an equidigital number, since it uses as much as digits as its factorization.

129006719 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 129006719 is about 11358.1124752311. The cubic root of 129006719 is about 505.2862070726.

The spelling of 129006719 in words is "one hundred twenty-nine million, six thousand, seven hundred nineteen".