129459143 has 4 divisors (see below), whose sum is σ = 141228168. Its totient is φ = 117690120.

The previous prime is 129459091. The next prime is 129459163. The reversal of 129459143 is 341954921.

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

It is a cyclic number.

It is not a de Polignac number, because 129459143 - 2¹² = 129455047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129459097 and 129459106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129459163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5884496 + ... + 5884517.

It is an arithmetic number, because the mean of its divisors is an integer number (35307042).

Almost surely, 2^129459143 is an apocalyptic number.

129459143 is a deficient number, since it is larger than the sum of its proper divisors (11769025).

129459143 is a wasteful number, since it uses less digits than its factorization.

129459143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11769024.

The product of its digits is 38880, while the sum is 38.

The square root of 129459143 is about 11378.0113816079. The cubic root of 129459143 is about 505.8761941474.

The spelling of 129459143 in words is "one hundred twenty-nine million, four hundred fifty-nine thousand, one hundred forty-three".