129096645 has 8 divisors (see below), whose sum is σ = 206554656. Its totient is φ = 68851536.

The previous prime is 129096637. The next prime is 129096647. The reversal of 129096645 is 546690921.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129096645 - 2³ = 129096637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129096597 and 129096606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129096647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4303207 + ... + 4303236.

It is an arithmetic number, because the mean of its divisors is an integer number (25819332).

Almost surely, 2^129096645 is an apocalyptic number.

129096645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

129096645 is a deficient number, since it is larger than the sum of its proper divisors (77458011).

129096645 is an equidigital number, since it uses as much as digits as its factorization.

129096645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8606451.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 129096645 is about 11362.0704539270. The cubic root of 129096645 is about 505.4035854905.

The spelling of 129096645 in words is "one hundred twenty-nine million, ninety-six thousand, six hundred forty-five".