129084826123 has 8 divisors (see below), whose sum is σ = 148231379520. Its totient is φ = 111173534280.

The previous prime is 129084826111. The next prime is 129084826141. The reversal of 129084826123 is 321628480921.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129084826123 is a prime.

It is a super-2 number, since 2×129084826123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129084826163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308815165 + ... + 308815582.

It is an arithmetic number, because the mean of its divisors is an integer number (18528922440).

Almost surely, 2^129084826123 is an apocalyptic number.

129084826123 is a deficient number, since it is larger than the sum of its proper divisors (19146553397).

129084826123 is a wasteful number, since it uses less digits than its factorization.

129084826123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617630777.

The product of its (nonzero) digits is 331776, while the sum is 46.

The spelling of 129084826123 in words is "one hundred twenty-nine billion, eighty-four million, eight hundred twenty-six thousand, one hundred twenty-three".