129900943 has 8 divisors (see below), whose sum is σ = 134259840. Its totient is φ = 125552640.

The previous prime is 129900923. The next prime is 129900959. The reversal of 129900943 is 349009921.

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 129900943 - 2⁹ = 129900431 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 (129900923) 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, 28143 + ... + 32431.

It is an arithmetic number, because the mean of its divisors is an integer number (16782480).

Almost surely, 2^129900943 is an apocalyptic number.

129900943 is a deficient number, since it is larger than the sum of its proper divisors (4358897).

129900943 is an equidigital number, since it uses as much as digits as its factorization.

129900943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5297.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 129900943 is about 11397.4094863701. The cubic root of 129900943 is about 506.4510018682.

The spelling of 129900943 in words is "one hundred twenty-nine million, nine hundred thousand, nine hundred forty-three".