19442073 has 24 divisors (see below), whose sum is σ = 31746720. Its totient is φ = 10523520.

The previous prime is 19442051. The next prime is 19442083. The reversal of 19442073 is 37024491.

It is a happy number.

It is not a de Polignac number, because 19442073 - 2⁵ = 19442041 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 19442073.

It is not an unprimeable number, because it can be changed into a prime (19442023) 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 in 23 ways as a sum of consecutive naturals, for example, 688 + ... + 6273.

It is an arithmetic number, because the mean of its divisors is an integer number (1322780).

Almost surely, 2^19442073 is an apocalyptic number.

It is an amenable number.

19442073 is a deficient number, since it is larger than the sum of its proper divisors (12304647).

19442073 is a wasteful number, since it uses less digits than its factorization.

19442073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6997 (or 6990 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 19442073 is about 4409.3166137169. The cubic root of 19442073 is about 268.8938420176.

The spelling of 19442073 in words is "nineteen million, four hundred forty-two thousand, seventy-three".