2031020042 has 4 divisors (see below), whose sum is σ = 3046530066. Its totient is φ = 1015510020.

The previous prime is 2031020041. The next prime is 2031020053. The reversal of 2031020042 is 2400201302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1215289321 + 815730721 = 34861^2 + 28561^2 .

It is a super-2 number, since 2×2031020042² = 8250084822011363528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2031019999 and 2031020026.

It is not an unprimeable number, because it can be changed into a prime (2031020041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 507755009 + ... + 507755012.

Almost surely, 2^2031020042 is an apocalyptic number.

2031020042 is a deficient number, since it is larger than the sum of its proper divisors (1015510024).

2031020042 is a wasteful number, since it uses less digits than its factorization.

2031020042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015510023.

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

The square root of 2031020042 is about 45066.8397161372. The cubic root of 2031020042 is about 1266.4014613593.

Adding to 2031020042 its reverse (2400201302), we get a palindrome (4431221344).

The spelling of 2031020042 in words is "two billion, thirty-one million, twenty thousand, forty-two".