19710042 has 32 divisors (see below), whose sum is σ = 43421184. Its totient is φ = 5914800.

The previous prime is 19710023. The next prime is 19710043. The reversal of 19710042 is 24001791.

It is a junction number, because it is equal to n+sod(n) for n = 19709994 and 19710021.

It is not an unprimeable number, because it can be changed into a prime (19710043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5667 + ... + 8457.

It is an arithmetic number, because the mean of its divisors is an integer number (1356912).

Almost surely, 2^19710042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19710042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21710592).

19710042 is an abundant number, since it is smaller than the sum of its proper divisors (23711142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19710042 is a wasteful number, since it uses less digits than its factorization.

19710042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2914.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 19710042 is about 4439.5993062438. The cubic root of 19710042 is about 270.1235922511.

The spelling of 19710042 in words is "nineteen million, seven hundred ten thousand, forty-two".