129382543 has 8 divisors (see below), whose sum is σ = 134869680. Its totient is φ = 123963840.

The previous prime is 129382501. The next prime is 129382553. The reversal of 129382543 is 345283921.

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 129382543 - 2⁹ = 129382031 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 (129382553) 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, 13230 + ... + 20827.

It is an arithmetic number, because the mean of its divisors is an integer number (16858710).

Almost surely, 2^129382543 is an apocalyptic number.

129382543 is a deficient number, since it is larger than the sum of its proper divisors (5487137).

129382543 is a wasteful number, since it uses less digits than its factorization.

129382543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34217.

The product of its digits is 51840, while the sum is 37.

The square root of 129382543 is about 11374.6447417051. The cubic root of 129382543 is about 505.7764000842.

The spelling of 129382543 in words is "one hundred twenty-nine million, three hundred eighty-two thousand, five hundred forty-three".