129859128064842 has 32 divisors (see below), whose sum is σ = 283330005580800. Its totient is φ = 39351112193520.

The previous prime is 129859128064823. The next prime is 129859128064859. The reversal of 129859128064842 is 248460821958921.

It is a super-2 number, since 2×129859128064842² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16235503 + ... + 22875965.

It is an arithmetic number, because the mean of its divisors is an integer number (8854062674400).

Almost surely, 2^{129859128064842} is an apocalyptic number.

129859128064842 is an abundant number, since it is smaller than the sum of its proper divisors (153470877515958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129859128064842 is a wasteful number, since it uses less digits than its factorization.

129859128064842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6936778.

The product of its (nonzero) digits is 159252480, while the sum is 69.

The spelling of 129859128064842 in words is "one hundred twenty-nine trillion, eight hundred fifty-nine billion, one hundred twenty-eight million, sixty-four thousand, eight hundred forty-two".