20006042 has 16 divisors (see below), whose sum is σ = 36313920. Its totient is φ = 8069568.

The previous prime is 20006023. The next prime is 20006047. The reversal of 20006042 is 24060002.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (20006047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41792 + ... + 42267.

It is an arithmetic number, because the mean of its divisors is an integer number (2269620).

Almost surely, 2^20006042 is an apocalyptic number.

20006042 is a deficient number, since it is larger than the sum of its proper divisors (16307878).

20006042 is a wasteful number, since it uses less digits than its factorization.

20006042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84085.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 20006042 is about 4472.8114201249. The cubic root of 20006042 is about 271.4690930928.

Adding to 20006042 its reverse (24060002), we get a palindrome (44066044).

The spelling of 20006042 in words is "twenty million, six thousand, forty-two".