129843 has 20 divisors (see below), whose sum is σ = 222640. Its totient is φ = 73872.

The previous prime is 129841. The next prime is 129853. The reversal of 129843 is 348921.

It is not a de Polignac number, because 129843 - 2¹ = 129841 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129841) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 453 + ... + 681.

It is an arithmetic number, because the mean of its divisors is an integer number (11132).

2¹²⁹⁸⁴³ is an apocalyptic number.

129843 is a deficient number, since it is larger than the sum of its proper divisors (92797).

129843 is an equidigital number, since it uses as much as digits as its factorization.

129843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 239 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 129843 is about 360.3373419450. The cubic root of 129843 is about 50.6375688957.

The spelling of 129843 in words is "one hundred twenty-nine thousand, eight hundred forty-three".