30129105 has 16 divisors (see below), whose sum is σ = 48276864. Its totient is φ = 16045440.

The previous prime is 30129091. The next prime is 30129107. The reversal of 30129105 is 50192103.

It is not a de Polignac number, because 30129105 - 2⁴ = 30129089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30129107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15540 + ... + 17370.

It is an arithmetic number, because the mean of its divisors is an integer number (3017304).

Almost surely, 2^30129105 is an apocalyptic number.

It is an amenable number.

30129105 is a deficient number, since it is larger than the sum of its proper divisors (18147759).

30129105 is a wasteful number, since it uses less digits than its factorization.

30129105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2936.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 30129105 is about 5488.9985425394. The cubic root of 30129105 is about 311.1683452194.

The spelling of 30129105 in words is "thirty million, one hundred twenty-nine thousand, one hundred five".