129070811 has 2 divisors, whose sum is σ = 129070812. Its totient is φ = 129070810.

The previous prime is 129070807. The next prime is 129070889. The reversal of 129070811 is 118070921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129070811 - 2² = 129070807 is a prime.

It is not a weakly prime, because it can be changed into another prime (129070801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64535405 + 64535406.

It is an arithmetic number, because the mean of its divisors is an integer number (64535406).

Almost surely, 2^129070811 is an apocalyptic number.

129070811 is a deficient number, since it is larger than the sum of its proper divisors (1).

129070811 is an equidigital number, since it uses as much as digits as its factorization.

129070811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 29.

The square root of 129070811 is about 11360.9335443880. The cubic root of 129070811 is about 505.3698705238.

The spelling of 129070811 in words is "one hundred twenty-nine million, seventy thousand, eight hundred eleven".