30342979 has 2 divisors, whose sum is σ = 30342980. Its totient is φ = 30342978.

The previous prime is 30342937. The next prime is 30343043. The reversal of 30342979 is 97924303.

It is a weak prime.

It is an emirp because it is prime and its reverse (97924303) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30342979 is a prime.

It is not a weakly prime, because it can be changed into another prime (30342929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15171489 + 15171490.

It is an arithmetic number, because the mean of its divisors is an integer number (15171490).

Almost surely, 2^30342979 is an apocalyptic number.

30342979 is a deficient number, since it is larger than the sum of its proper divisors (1).

30342979 is an equidigital number, since it uses as much as digits as its factorization.

30342979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 30342979 is about 5508.4461511392. The cubic root of 30342979 is about 311.9028948026.

The spelling of 30342979 in words is "thirty million, three hundred forty-two thousand, nine hundred seventy-nine".