129870007 has 2 divisors, whose sum is σ = 129870008. Its totient is φ = 129870006.

The previous prime is 129869969. The next prime is 129870011. The reversal of 129870007 is 700078921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129870007 - 2⁷ = 129869879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129870077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64935003 + 64935004.

It is an arithmetic number, because the mean of its divisors is an integer number (64935004).

Almost surely, 2^129870007 is an apocalyptic number.

129870007 is a deficient number, since it is larger than the sum of its proper divisors (1).

129870007 is an equidigital number, since it uses as much as digits as its factorization.

129870007 is an evil number, because the sum of its binary digits is even.

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

The square root of 129870007 is about 11396.0522550575. The cubic root of 129870007 is about 506.4107947900.

The spelling of 129870007 in words is "one hundred twenty-nine million, eight hundred seventy thousand, seven".