129411075 has 12 divisors (see below), whose sum is σ = 213959768. Its totient is φ = 69019200.

The previous prime is 129411059. The next prime is 129411097. The reversal of 129411075 is 570114921.

It is not a de Polignac number, because 129411075 - 2⁴ = 129411059 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 862666 + ... + 862815.

Almost surely, 2^129411075 is an apocalyptic number.

129411075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

129411075 is a deficient number, since it is larger than the sum of its proper divisors (84548693).

129411075 is a wasteful number, since it uses less digits than its factorization.

129411075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1725494 (or 1725489 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 129411075 is about 11375.8988655842. The cubic root of 129411075 is about 505.8135760206.

Adding to 129411075 its reverse (570114921), we get a palindrome (699525996).

The spelling of 129411075 in words is "one hundred twenty-nine million, four hundred eleven thousand, seventy-five".