129075673 has 2 divisors, whose sum is σ = 129075674. Its totient is φ = 129075672.

The previous prime is 129075671. The next prime is 129075697. The reversal of 129075673 is 376570921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117765904 + 11309769 = 10852^2 + 3363^2 .

It is an emirp because it is prime and its reverse (376570921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129075673 - 2¹ = 129075671 is a prime.

Together with 129075671, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (129075671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64537836 + 64537837.

It is an arithmetic number, because the mean of its divisors is an integer number (64537837).

Almost surely, 2^129075673 is an apocalyptic number.

It is an amenable number.

129075673 is a deficient number, since it is larger than the sum of its proper divisors (1).

129075673 is an equidigital number, since it uses as much as digits as its factorization.

129075673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 79380, while the sum is 40.

The square root of 129075673 is about 11361.1475212674. The cubic root of 129075673 is about 505.3762160780.

The spelling of 129075673 in words is "one hundred twenty-nine million, seventy-five thousand, six hundred seventy-three".