30542243 has 2 divisors, whose sum is σ = 30542244. Its totient is φ = 30542242.

The previous prime is 30542207. The next prime is 30542261. The reversal of 30542243 is 34224503.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30542243 - 2⁶ = 30542179 is a prime.

It is not a weakly prime, because it can be changed into another prime (30542203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15271121 + 15271122.

It is an arithmetic number, because the mean of its divisors is an integer number (15271122).

Almost surely, 2^30542243 is an apocalyptic number.

30542243 is a deficient number, since it is larger than the sum of its proper divisors (1).

30542243 is an equidigital number, since it uses as much as digits as its factorization.

30542243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 30542243 is about 5526.5036867806. The cubic root of 30542243 is about 312.5841667690.

Adding to 30542243 its reverse (34224503), we get a palindrome (64766746).

The spelling of 30542243 in words is "thirty million, five hundred forty-two thousand, two hundred forty-three".