19305242 has 16 divisors (see below), whose sum is σ = 32680800. Its totient is φ = 8472240.

The previous prime is 19305239. The next prime is 19305263. The reversal of 19305242 is 24250391.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 14492 + ... + 15767.

It is an arithmetic number, because the mean of its divisors is an integer number (2042550).

Almost surely, 2^19305242 is an apocalyptic number.

19305242 is a deficient number, since it is larger than the sum of its proper divisors (13375558).

19305242 is a wasteful number, since it uses less digits than its factorization.

19305242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30301.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 19305242 is about 4393.7730938227. The cubic root of 19305242 is about 268.2615420338.

The spelling of 19305242 in words is "nineteen million, three hundred five thousand, two hundred forty-two".