30007129 has 2 divisors, whose sum is σ = 30007130. Its totient is φ = 30007128.

The previous prime is 30007127. The next prime is 30007171. The reversal of 30007129 is 92170003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22581504 + 7425625 = 4752^2 + 2725^2 .

It is an emirp because it is prime and its reverse (92170003) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30007129 - 2¹ = 30007127 is a prime.

Together with 30007127, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (30007127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15003564 + 15003565.

It is an arithmetic number, because the mean of its divisors is an integer number (15003565).

Almost surely, 2^30007129 is an apocalyptic number.

It is an amenable number.

30007129 is a deficient number, since it is larger than the sum of its proper divisors (1).

30007129 is an equidigital number, since it uses as much as digits as its factorization.

30007129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 30007129 is about 5477.8763220796. The cubic root of 30007129 is about 310.7478613800.

The spelling of 30007129 in words is "thirty million, seven thousand, one hundred twenty-nine".