129870143 has 8 divisors (see below), whose sum is σ = 141246336. Its totient is φ = 118692000.

The previous prime is 129870133. The next prime is 129870173. The reversal of 129870143 is 341078921.

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 129870143 - 2⁴ = 129870127 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129870133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48143 + ... + 50768.

It is an arithmetic number, because the mean of its divisors is an integer number (17655792).

Almost surely, 2^129870143 is an apocalyptic number.

129870143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

129870143 is a deficient number, since it is larger than the sum of its proper divisors (11376193).

129870143 is a wasteful number, since it uses less digits than its factorization.

129870143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99025.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 129870143 is about 11396.0582220345. The cubic root of 129870143 is about 506.4109715613.

The spelling of 129870143 in words is "one hundred twenty-nine million, eight hundred seventy thousand, one hundred forty-three".