30542641 has 2 divisors, whose sum is σ = 30542642. Its totient is φ = 30542640.

The previous prime is 30542579. The next prime is 30542669. The reversal of 30542641 is 14624503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26010000 + 4532641 = 5100^2 + 2129^2 .

It is an emirp because it is prime and its reverse (14624503) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30542641 - 2¹¹ = 30540593 is a prime.

It is not a weakly prime, because it can be changed into another prime (30542441) 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, 15271320 + 15271321.

It is an arithmetic number, because the mean of its divisors is an integer number (15271321).

Almost surely, 2^30542641 is an apocalyptic number.

It is an amenable number.

30542641 is a deficient number, since it is larger than the sum of its proper divisors (1).

30542641 is an equidigital number, since it uses as much as digits as its factorization.

30542641 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 25.

The square root of 30542641 is about 5526.5396949628. The cubic root of 30542641 is about 312.5855245383.

The spelling of 30542641 in words is "thirty million, five hundred forty-two thousand, six hundred forty-one".