129875342 has 16 divisors (see below), whose sum is σ = 215242272. Its totient is φ = 58460160.

The previous prime is 129875323. The next prime is 129875357. The reversal of 129875342 is 243578921.

It is a self number, because there is not a number n which added to its sum of digits gives 129875342.

It is a congruent number.

It is an unprimeable number.

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, 82259 + ... + 83822.

It is an arithmetic number, because the mean of its divisors is an integer number (13452642).

Almost surely, 2^129875342 is an apocalyptic number.

129875342 is a deficient number, since it is larger than the sum of its proper divisors (85366930).

129875342 is a wasteful number, since it uses less digits than its factorization.

129875342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166123.

The product of its digits is 120960, while the sum is 41.

The square root of 129875342 is about 11396.2863249394. The cubic root of 129875342 is about 506.4177290691.

The spelling of 129875342 in words is "one hundred twenty-nine million, eight hundred seventy-five thousand, three hundred forty-two".