129336373 has 2 divisors, whose sum is σ = 129336374. Its totient is φ = 129336372.

The previous prime is 129336359. The next prime is 129336407. The reversal of 129336373 is 373633921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123609924 + 5726449 = 11118^2 + 2393^2 .

It is a cyclic number.

It is not a de Polignac number, because 129336373 - 2⁵ = 129336341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129336343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64668186 + 64668187.

It is an arithmetic number, because the mean of its divisors is an integer number (64668187).

Almost surely, 2^129336373 is an apocalyptic number.

It is an amenable number.

129336373 is a deficient number, since it is larger than the sum of its proper divisors (1).

129336373 is an equidigital number, since it uses as much as digits as its factorization.

129336373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61236, while the sum is 37.

The square root of 129336373 is about 11372.6150466812. The cubic root of 129336373 is about 505.7162310328.

It can be divided in two parts, 12933 and 6373, that added together give a triangular number (19306 = T₁₉₆).

The spelling of 129336373 in words is "one hundred twenty-nine million, three hundred thirty-six thousand, three hundred seventy-three".