19993042 has 8 divisors (see below), whose sum is σ = 30010032. Its totient is φ = 9989700.

The previous prime is 19993013. The next prime is 19993087. The reversal of 19993042 is 24039991.

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 = 19992992 and 19993010.

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, 1917 + ... + 6607.

It is an arithmetic number, because the mean of its divisors is an integer number (3751254).

Almost surely, 2^19993042 is an apocalyptic number.

19993042 is a deficient number, since it is larger than the sum of its proper divisors (10016990).

19993042 is a wasteful number, since it uses less digits than its factorization.

19993042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6824.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 19993042 is about 4471.3579592781. The cubic root of 19993042 is about 271.4102798121.

It can be divided in two parts, 1999 and 3042, that added together give a square (5041 = 71²).

The spelling of 19993042 in words is "nineteen million, nine hundred ninety-three thousand, forty-two".