129678703 has 32 divisors (see below), whose sum is σ = 172551168. Its totient is φ = 94348800.

The previous prime is 129678683. The next prime is 129678707. The reversal of 129678703 is 307876921.

It is a happy number.

It is not a de Polignac number, because 129678703 - 2⁵ = 129678671 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 129678703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129678707) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 205198 + ... + 205828.

It is an arithmetic number, because the mean of its divisors is an integer number (5392224).

Almost surely, 2^129678703 is an apocalyptic number.

129678703 is a deficient number, since it is larger than the sum of its proper divisors (42872465).

129678703 is a wasteful number, since it uses less digits than its factorization.

129678703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 129678703 is about 11387.6557289022. The cubic root of 129678703 is about 506.1620177743.

The spelling of 129678703 in words is "one hundred twenty-nine million, six hundred seventy-eight thousand, seven hundred three".