129324973 has 2 divisors, whose sum is σ = 129324974. Its totient is φ = 129324972.

The previous prime is 129324961. The next prime is 129325013. The reversal of 129324973 is 379423921.

It is an a-pointer prime, because the next prime (129325013) can be obtained adding 129324973 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105637284 + 23687689 = 10278^2 + 4867^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129324973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129324913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64662486 + 64662487.

It is an arithmetic number, because the mean of its divisors is an integer number (64662487).

Almost surely, 2^129324973 is an apocalyptic number.

It is an amenable number.

129324973 is a deficient number, since it is larger than the sum of its proper divisors (1).

129324973 is an equidigital number, since it uses as much as digits as its factorization.

129324973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 40.

The square root of 129324973 is about 11372.1138316498. The cubic root of 129324973 is about 505.7013722727.

The spelling of 129324973 in words is "one hundred twenty-nine million, three hundred twenty-four thousand, nine hundred seventy-three".