129056371 has 2 divisors, whose sum is σ = 129056372. Its totient is φ = 129056370.

The previous prime is 129056339. The next prime is 129056429. The reversal of 129056371 is 173650921.

It is a weak prime.

It is an emirp because it is prime and its reverse (173650921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129056371 - 2⁵ = 129056339 is a prime.

It is not a weakly prime, because it can be changed into another prime (129056311) 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 as a sum of consecutive naturals, namely, 64528185 + 64528186.

It is an arithmetic number, because the mean of its divisors is an integer number (64528186).

Almost surely, 2^129056371 is an apocalyptic number.

129056371 is a deficient number, since it is larger than the sum of its proper divisors (1).

129056371 is an equidigital number, since it uses as much as digits as its factorization.

129056371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 129056371 is about 11360.2980154572. The cubic root of 129056371 is about 505.3510234713.

The spelling of 129056371 in words is "one hundred twenty-nine million, fifty-six thousand, three hundred seventy-one".