129501193 has 2 divisors, whose sum is σ = 129501194. Its totient is φ = 129501192.

The previous prime is 129501181. The next prime is 129501199. The reversal of 129501193 is 391105921.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127418944 + 2082249 = 11288^2 + 1443^2 .

It is a cyclic number.

It is not a de Polignac number, because 129501193 - 2⁵ = 129501161 is a prime.

It is not a weakly prime, because it can be changed into another prime (129501199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64750596 + 64750597.

It is an arithmetic number, because the mean of its divisors is an integer number (64750597).

Almost surely, 2^129501193 is an apocalyptic number.

It is an amenable number.

129501193 is a deficient number, since it is larger than the sum of its proper divisors (1).

129501193 is an equidigital number, since it uses as much as digits as its factorization.

129501193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 129501193 is about 11379.8590940310. The cubic root of 129501193 is about 505.9309599233.

The spelling of 129501193 in words is "one hundred twenty-nine million, five hundred one thousand, one hundred ninety-three".