129726 has 12 divisors (see below), whose sum is σ = 281112. Its totient is φ = 43236.

The previous prime is 129719. The next prime is 129733. The reversal of 129726 is 627921.

It is an interprime number because it is at equal distance from previous prime (129719) and next prime (129733).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 129726.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 129726.

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 5 ways as a sum of consecutive naturals, for example, 3586 + ... + 3621.

It is an arithmetic number, because the mean of its divisors is an integer number (23426).

2¹²⁹⁷²⁶ is an apocalyptic number.

129726 is an abundant number, since it is smaller than the sum of its proper divisors (151386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129726 is a wasteful number, since it uses less digits than its factorization.

129726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7215 (or 7212 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 129726 is about 360.1749574859. The cubic root of 129726 is about 50.6223546857.

The spelling of 129726 in words is "one hundred twenty-nine thousand, seven hundred twenty-six".