129743 has 4 divisors (see below), whose sum is σ = 135408. Its totient is φ = 124080.

The previous prime is 129737. The next prime is 129749. The reversal of 129743 is 347921.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (129737) and next prime (129749).

It is a cyclic number.

It is not a de Polignac number, because 129743 - 2¹⁴ = 113359 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129749) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2798 + ... + 2843.

It is an arithmetic number, because the mean of its divisors is an integer number (33852).

2¹²⁹⁷⁴³ is an apocalyptic number.

129743 is a deficient number, since it is larger than the sum of its proper divisors (5665).

129743 is an equidigital number, since it uses as much as digits as its factorization.

129743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5664.

The product of its digits is 1512, while the sum is 26.

The square root of 129743 is about 360.1985563547. The cubic root of 129743 is about 50.6245658653.

The spelling of 129743 in words is "one hundred twenty-nine thousand, seven hundred forty-three".