129253417 has 2 divisors, whose sum is σ = 129253418. Its totient is φ = 129253416.

The previous prime is 129253381. The next prime is 129253429. The reversal of 129253417 is 714352921.

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., 87534736 + 41718681 = 9356^2 + 6459^2 .

It is a cyclic number.

It is not a de Polignac number, because 129253417 - 2¹⁹ = 128729129 is a prime.

It is not a weakly prime, because it can be changed into another prime (129253457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64626708 + 64626709.

It is an arithmetic number, because the mean of its divisors is an integer number (64626709).

Almost surely, 2^129253417 is an apocalyptic number.

It is an amenable number.

129253417 is a deficient number, since it is larger than the sum of its proper divisors (1).

129253417 is an equidigital number, since it uses as much as digits as its factorization.

129253417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 34.

The square root of 129253417 is about 11368.9672793970. The cubic root of 129253417 is about 505.6080862338.

The spelling of 129253417 in words is "one hundred twenty-nine million, two hundred fifty-three thousand, four hundred seventeen".