129830751 has 12 divisors (see below), whose sum is σ = 198564912. Its totient is φ = 81462336.

The previous prime is 129830749. The next prime is 129830773. The reversal of 129830751 is 157038921.

It is not a de Polignac number, because 129830751 - 2¹ = 129830749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129830851) 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 11 ways as a sum of consecutive naturals, for example, 424131 + ... + 424436.

It is an arithmetic number, because the mean of its divisors is an integer number (16547076).

Almost surely, 2^129830751 is an apocalyptic number.

129830751 is a deficient number, since it is larger than the sum of its proper divisors (68734161).

129830751 is a wasteful number, since it uses less digits than its factorization.

129830751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848590 (or 848587 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 129830751 is about 11394.3297740587. The cubic root of 129830751 is about 506.3597651336.

The spelling of 129830751 in words is "one hundred twenty-nine million, eight hundred thirty thousand, seven hundred fifty-one".