129290263 has 2 divisors, whose sum is σ = 129290264. Its totient is φ = 129290262.

The previous prime is 129290257. The next prime is 129290297. The reversal of 129290263 is 362092921.

It is an a-pointer prime, because the next prime (129290297) can be obtained adding 129290263 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129290263 - 2⁹ = 129289751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129290663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64645131 + 64645132.

It is an arithmetic number, because the mean of its divisors is an integer number (64645132).

Almost surely, 2^129290263 is an apocalyptic number.

129290263 is a deficient number, since it is larger than the sum of its proper divisors (1).

129290263 is an equidigital number, since it uses as much as digits as its factorization.

129290263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 129290263 is about 11370.5876277350. The cubic root of 129290263 is about 505.6561258808.

The spelling of 129290263 in words is "one hundred twenty-nine million, two hundred ninety thousand, two hundred sixty-three".