20220042 has 16 divisors (see below), whose sum is σ = 40506912. Its totient is φ = 6728880.

The previous prime is 20220041. The next prime is 20220049. The reversal of 20220042 is 24002202.

It is a happy number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (20220041) 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, 1708 + ... + 6584.

It is an arithmetic number, because the mean of its divisors is an integer number (2531682).

Almost surely, 2^20220042 is an apocalyptic number.

20220042 is an abundant number, since it is smaller than the sum of its proper divisors (20286870).

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

20220042 is a wasteful number, since it uses less digits than its factorization.

20220042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5573.

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 20220042 is about 4496.6701013083. The cubic root of 20220042 is about 272.4336095031.

Adding to 20220042 its reverse (24002202), we get a palindrome (44222244).

The spelling of 20220042 in words is "twenty million, two hundred twenty thousand, forty-two".