129458055122 has 54 divisors (see below), whose sum is σ = 216525055887. Its totient is φ = 58007532000.

The previous prime is 129458055109. The next prime is 129458055157. The reversal of 129458055122 is 221550854921.

It can be written as a sum of positive squares in 5 ways, for example, as 116573762041 + 12884293081 = 341429^2 + 113509^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=254419.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 565318904 + ... + 565319132.

Almost surely, 2^129458055122 is an apocalyptic number.

129458055122 is a deficient number, since it is larger than the sum of its proper divisors (87067000765).

129458055122 is an equidigital number, since it uses as much as digits as its factorization.

129458055122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684 (or 343 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 44.

The spelling of 129458055122 in words is "one hundred twenty-nine billion, four hundred fifty-eight million, fifty-five thousand, one hundred twenty-two".