30042641 has 2 divisors, whose sum is σ = 30042642. Its totient is φ = 30042640.

The previous prime is 30042619. The next prime is 30042643. The reversal of 30042641 is 14624003.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20611600 + 9431041 = 4540^2 + 3071^2 .

It is a cyclic number.

It is not a de Polignac number, because 30042641 - 2¹⁸ = 29780497 is a prime.

Together with 30042643, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30042643) 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, 15021320 + 15021321.

It is an arithmetic number, because the mean of its divisors is an integer number (15021321).

Almost surely, 2^30042641 is an apocalyptic number.

It is an amenable number.

30042641 is a deficient number, since it is larger than the sum of its proper divisors (1).

30042641 is an equidigital number, since it uses as much as digits as its factorization.

30042641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 30042641 is about 5481.1167657695. The cubic root of 30042641 is about 310.8703981242.

Adding to 30042641 its reverse (14624003), we get a palindrome (44666644).

The spelling of 30042641 in words is "thirty million, forty-two thousand, six hundred forty-one".