129716750 has 16 divisors (see below), whose sum is σ = 242830224. Its totient is φ = 51886600.

The previous prime is 129716747. The next prime is 129716753. The reversal of 129716750 is 57617921.

It is an interprime number because it is at equal distance from previous prime (129716747) and next prime (129716753).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129716753) 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, 259184 + ... + 259683.

It is an arithmetic number, because the mean of its divisors is an integer number (15176889).

Almost surely, 2^129716750 is an apocalyptic number.

129716750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129716750 is a deficient number, since it is larger than the sum of its proper divisors (113113474).

129716750 is an equidigital number, since it uses as much as digits as its factorization.

129716750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518884 (or 518874 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 38.

The square root of 129716750 is about 11389.3261433677. The cubic root of 129716750 is about 506.2115146276.

The spelling of 129716750 in words is "one hundred twenty-nine million, seven hundred sixteen thousand, seven hundred fifty".