30102129 has 6 divisors (see below), whose sum is σ = 43480866. Its totient is φ = 20068080.

The previous prime is 30102091. The next prime is 30102131. The reversal of 30102129 is 92120103.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 27279729 + 2822400 = 5223^2 + 1680^2 .

It is not a de Polignac number, because 30102129 - 2⁸ = 30101873 is a prime.

It is a super-2 number, since 2×30102129² = 1812276340665282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30102139) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1672332 + ... + 1672349.

It is an arithmetic number, because the mean of its divisors is an integer number (7246811).

Almost surely, 2^30102129 is an apocalyptic number.

It is an amenable number.

30102129 is a deficient number, since it is larger than the sum of its proper divisors (13378737).

30102129 is a wasteful number, since it uses less digits than its factorization.

30102129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3344687 (or 3344684 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 30102129 is about 5486.5407134186. The cubic root of 30102129 is about 311.0754496208.

The spelling of 30102129 in words is "thirty million, one hundred two thousand, one hundred twenty-nine".