129063109 has 12 divisors (see below), whose sum is σ = 152970444. Its totient is φ = 108536064.

The previous prime is 129063089. The next prime is 129063113. The reversal of 129063109 is 901360921.

It can be written as a sum of positive squares in 2 ways, for example, as 35070084 + 93993025 = 5922^2 + 9695^2 .

It is not a de Polignac number, because 129063109 - 2¹¹ = 129061061 is a prime.

It is a super-2 number, since 2×129063109² = 33314572209491762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129061109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22252 + ... + 27445.

It is an arithmetic number, because the mean of its divisors is an integer number (12747537).

Almost surely, 2^129063109 is an apocalyptic number.

It is an amenable number.

129063109 is a deficient number, since it is larger than the sum of its proper divisors (23907335).

129063109 is an equidigital number, since it uses as much as digits as its factorization.

129063109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49764 (or 49757 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 129063109 is about 11360.5945707080. The cubic root of 129063109 is about 505.3598180673.

The spelling of 129063109 in words is "one hundred twenty-nine million, sixty-three thousand, one hundred nine".