129002473 has 2 divisors, whose sum is σ = 129002474. Its totient is φ = 129002472.

The previous prime is 129002431. The next prime is 129002479. The reversal of 129002473 is 374200921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98565184 + 30437289 = 9928^2 + 5517^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129002473 is a prime.

It is not a weakly prime, because it can be changed into another prime (129002479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64501236 + 64501237.

It is an arithmetic number, because the mean of its divisors is an integer number (64501237).

Almost surely, 2^129002473 is an apocalyptic number.

It is an amenable number.

129002473 is a deficient number, since it is larger than the sum of its proper divisors (1).

129002473 is an equidigital number, since it uses as much as digits as its factorization.

129002473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 129002473 is about 11357.9255588334. The cubic root of 129002473 is about 505.2806635144.

The spelling of 129002473 in words is "one hundred twenty-nine million, two thousand, four hundred seventy-three".