30042143 has 2 divisors, whose sum is σ = 30042144. Its totient is φ = 30042142.

The previous prime is 30042127. The next prime is 30042157. The reversal of 30042143 is 34124003.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30042143 - 2⁴ = 30042127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30042343) 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 as a sum of consecutive naturals, namely, 15021071 + 15021072.

It is an arithmetic number, because the mean of its divisors is an integer number (15021072).

Almost surely, 2^30042143 is an apocalyptic number.

30042143 is a deficient number, since it is larger than the sum of its proper divisors (1).

30042143 is an equidigital number, since it uses as much as digits as its factorization.

30042143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 30042143 is about 5481.0713368830. The cubic root of 30042143 is about 310.8686804066.

Adding to 30042143 its reverse (34124003), we get a palindrome (64166146).

The spelling of 30042143 in words is "thirty million, forty-two thousand, one hundred forty-three".