129700843 has 2 divisors, whose sum is σ = 129700844. Its totient is φ = 129700842.

The previous prime is 129700829. The next prime is 129700861. The reversal of 129700843 is 348007921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129700843 - 2⁹ = 129700331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129700799 and 129700808.

It is not a weakly prime, because it can be changed into another prime (129707843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64850421 + 64850422.

It is an arithmetic number, because the mean of its divisors is an integer number (64850422).

Almost surely, 2^129700843 is an apocalyptic number.

129700843 is a deficient number, since it is larger than the sum of its proper divisors (1).

129700843 is an equidigital number, since it uses as much as digits as its factorization.

129700843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 129700843 is about 11388.6277926711. The cubic root of 129700843 is about 506.1908217571.

The spelling of 129700843 in words is "one hundred twenty-nine million, seven hundred thousand, eight hundred forty-three".