20050042 has 16 divisors (see below), whose sum is σ = 30752640. Its totient is φ = 9801792.

The previous prime is 20050039. The next prime is 20050057. The reversal of 20050042 is 24005002.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 17293 + ... + 18415.

It is an arithmetic number, because the mean of its divisors is an integer number (1922040).

Almost surely, 2^20050042 is an apocalyptic number.

20050042 is a deficient number, since it is larger than the sum of its proper divisors (10702598).

20050042 is a wasteful number, since it uses less digits than its factorization.

20050042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317.

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 20050042 is about 4477.7273253292. The cubic root of 20050042 is about 271.6679645808.

Adding to 20050042 its reverse (24005002), we get a palindrome (44055044).

The spelling of 20050042 in words is "twenty million, fifty thousand, forty-two".