19885042 has 8 divisors (see below), whose sum is σ = 30462336. Its totient is φ = 9730932.

The previous prime is 19885037. The next prime is 19885067. The reversal of 19885042 is 24058891.

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 = 19884992 and 19885010.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105678 + ... + 105865.

It is an arithmetic number, because the mean of its divisors is an integer number (3807792).

Almost surely, 2^19885042 is an apocalyptic number.

19885042 is a deficient number, since it is larger than the sum of its proper divisors (10577294).

19885042 is a wasteful number, since it uses less digits than its factorization.

19885042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211592.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 19885042 is about 4459.2647375997. The cubic root of 19885042 is about 270.9206886548.

Subtracting 19885042 from its reverse (24058891), we obtain a square (4173849 = 2043²).

The spelling of 19885042 in words is "nineteen million, eight hundred eighty-five thousand, forty-two".