30124729 has 2 divisors, whose sum is σ = 30124730. Its totient is φ = 30124728.

The previous prime is 30124727. The next prime is 30124753. The reversal of 30124729 is 92742103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29452329 + 672400 = 5427^2 + 820^2 .

It is a cyclic number.

It is not a de Polignac number, because 30124729 - 2¹ = 30124727 is a prime.

Together with 30124727, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 30124697 and 30124706.

It is not a weakly prime, because it can be changed into another prime (30124727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15062364 + 15062365.

It is an arithmetic number, because the mean of its divisors is an integer number (15062365).

Almost surely, 2^30124729 is an apocalyptic number.

It is an amenable number.

30124729 is a deficient number, since it is larger than the sum of its proper divisors (1).

30124729 is an equidigital number, since it uses as much as digits as its factorization.

30124729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 30124729 is about 5488.5999125460. The cubic root of 30124729 is about 311.1532796252.

The spelling of 30124729 in words is "thirty million, one hundred twenty-four thousand, seven hundred twenty-nine".