129109106 has 8 divisors (see below), whose sum is σ = 221329920. Its totient is φ = 55332468.

The previous prime is 129109093. The next prime is 129109117. The reversal of 129109106 is 601901921.

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

It is a super-2 number, since 2×129109106² = 33338322504238472, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4611026 + ... + 4611053.

It is an arithmetic number, because the mean of its divisors is an integer number (27666240).

Almost surely, 2^129109106 is an apocalyptic number.

129109106 is a deficient number, since it is larger than the sum of its proper divisors (92220814).

129109106 is an equidigital number, since it uses as much as digits as its factorization.

129109106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9222088.

The product of its (nonzero) digits is 972, while the sum is 29.

The square root of 129109106 is about 11362.6188002590. The cubic root of 129109106 is about 505.4198462577.

The spelling of 129109106 in words is "one hundred twenty-nine million, one hundred nine thousand, one hundred six".