129143 has 8 divisors (see below), whose sum is σ = 155520. Its totient is φ = 104760.

The previous prime is 129127. The next prime is 129169. The reversal of 129143 is 341921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129143 - 2⁴ = 129127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353 + ... + 618.

It is an arithmetic number, because the mean of its divisors is an integer number (19440).

2¹²⁹¹⁴³ is an apocalyptic number.

129143 is a deficient number, since it is larger than the sum of its proper divisors (26377).

129143 is an equidigital number, since it uses as much as digits as its factorization.

129143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997.

The product of its digits is 216, while the sum is 20.

The square root of 129143 is about 359.3647172442. The cubic root of 129143 is about 50.5464070356.

It can be divided in two parts, 129 and 143, that added together give a palindrome (272).

The spelling of 129143 in words is "one hundred twenty-nine thousand, one hundred forty-three".