19394042 has 8 divisors (see below), whose sum is σ = 30802356. Its totient is φ = 9126592.

The previous prime is 19394027. The next prime is 19394047. The reversal of 19394042 is 24049391.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17732521 + 1661521 = 4211^2 + 1289^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×19394042² = 752257730195528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19394047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285173 + ... + 285240.

Almost surely, 2^19394042 is an apocalyptic number.

19394042 is a deficient number, since it is larger than the sum of its proper divisors (11408314).

19394042 is a wasteful number, since it uses less digits than its factorization.

19394042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570432.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 19394042 is about 4403.8667100629. The cubic root of 19394042 is about 268.6722282986.

The spelling of 19394042 in words is "nineteen million, three hundred ninety-four thousand, forty-two".