129913106 has 4 divisors (see below), whose sum is σ = 194869662. Its totient is φ = 64956552.

The previous prime is 129913073. The next prime is 129913117. The reversal of 129913106 is 601319921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 601319921 = 4967 ⋅121063.

It can be written as a sum of positive squares in only one way, i.e., 129846025 + 67081 = 11395^2 + 259^2 .

It is a super-2 number, since 2×129913106² = 33754830221134472, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32478275 + ... + 32478278.

Almost surely, 2^129913106 is an apocalyptic number.

129913106 is a deficient number, since it is larger than the sum of its proper divisors (64956556).

129913106 is an equidigital number, since it uses as much as digits as its factorization.

129913106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64956555.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 129913106 is about 11397.9430600438. The cubic root of 129913106 is about 506.4668081976.

The spelling of 129913106 in words is "one hundred twenty-nine million, nine hundred thirteen thousand, one hundred six".