2020210042 has 4 divisors (see below), whose sum is σ = 3030315066. Its totient is φ = 1010105020.

The previous prime is 2020210019. The next prime is 2020210043. The reversal of 2020210042 is 2400120202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2400120202 = 2 ⋅1200060101.

It can be written as a sum of positive squares in only one way, i.e., 1943839921 + 76370121 = 44089^2 + 8739^2 .

It is a super-2 number, since 2×2020210042² = 8162497227595283528, which contains 22 as substring.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2020210043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505052509 + ... + 505052512.

Almost surely, 2^2020210042 is an apocalyptic number.

2020210042 is a deficient number, since it is larger than the sum of its proper divisors (1010105024).

2020210042 is a wasteful number, since it uses less digits than its factorization.

2020210042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010105023.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 2020210042 is about 44946.7467343299. The cubic root of 2020210042 is about 1264.1506777893.

Adding to 2020210042 its reverse (2400120202), we get a palindrome (4420330244).

The spelling of 2020210042 in words is "two billion, twenty million, two hundred ten thousand, forty-two".