129056122 has 8 divisors (see below), whose sum is σ = 208475316. Its totient is φ = 59564352.

The previous prime is 129056107. The next prime is 129056143. The reversal of 129056122 is 221650921.

It can be written as a sum of positive squares in 2 ways, for example, as 129026881 + 29241 = 11359^2 + 171^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2481823 + ... + 2481874.

Almost surely, 2^129056122 is an apocalyptic number.

129056122 is a deficient number, since it is larger than the sum of its proper divisors (79419194).

129056122 is a wasteful number, since it uses less digits than its factorization.

129056122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4963712.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 129056122 is about 11360.2870562323. The cubic root of 129056122 is about 505.3506984647.

The spelling of 129056122 in words is "one hundred twenty-nine million, fifty-six thousand, one hundred twenty-two".