19655242 has 8 divisors (see below), whose sum is σ = 29516256. Its totient is φ = 9816492.

The previous prime is 19655231. The next prime is 19655263. The reversal of 19655242 is 24255691.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 19655198 and 19655207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3148 + ... + 7015.

It is an arithmetic number, because the mean of its divisors is an integer number (3689532).

Almost surely, 2^19655242 is an apocalyptic number.

19655242 is a deficient number, since it is larger than the sum of its proper divisors (9861014).

19655242 is a wasteful number, since it uses less digits than its factorization.

19655242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11132.

The product of its digits is 21600, while the sum is 34.

The square root of 19655242 is about 4433.4232822955. The cubic root of 19655242 is about 269.8730175637.

The spelling of 19655242 in words is "nineteen million, six hundred fifty-five thousand, two hundred forty-two".