129800707 has 4 divisors (see below), whose sum is σ = 135444240. Its totient is φ = 124157176.

The previous prime is 129800683. The next prime is 129800717. The reversal of 129800707 is 707008921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 707008921 = 47 ⋅15042743.

It is a cyclic number.

It is not a de Polignac number, because 129800707 - 2¹⁹ = 129276419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129800717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2821732 + ... + 2821777.

It is an arithmetic number, because the mean of its divisors is an integer number (33861060).

Almost surely, 2^129800707 is an apocalyptic number.

129800707 is a deficient number, since it is larger than the sum of its proper divisors (5643533).

129800707 is an equidigital number, since it uses as much as digits as its factorization.

129800707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5643532.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 129800707 is about 11393.0113227364. The cubic root of 129800707 is about 506.3207033903.

The spelling of 129800707 in words is "one hundred twenty-nine million, eight hundred thousand, seven hundred seven".