9120129 has 4 divisors (see below), whose sum is σ = 12160176. Its totient is φ = 6080084.

The previous prime is 9120127. The next prime is 9120149. The reversal of 9120129 is 9210219.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9210219 = 3 ⋅3070073.

It is a cyclic number.

It is not a de Polignac number, because 9120129 - 2¹ = 9120127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9120099 and 9120108.

It is not an unprimeable number, because it can be changed into a prime (9120127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1520019 + ... + 1520024.

It is an arithmetic number, because the mean of its divisors is an integer number (3040044).

Almost surely, 2^9120129 is an apocalyptic number.

It is an amenable number.

9120129 is a deficient number, since it is larger than the sum of its proper divisors (3040047).

9120129 is a wasteful number, since it uses less digits than its factorization.

9120129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3040046.

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 9120129 is about 3019.9551321170. The cubic root of 9120129 is about 208.9297704407.

The spelling of 9120129 in words is "nine million, one hundred twenty thousand, one hundred twenty-nine".