2042121031 has 4 divisors (see below), whose sum is σ = 2042216064. Its totient is φ = 2042026000.

The previous prime is 2042121019. The next prime is 2042121047. The reversal of 2042121031 is 1301212402.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2042121031 - 2¹⁷ = 2041989959 is a prime.

It is a super-2 number, since 2×2042121031² = 8340516610505005922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2042120996 and 2042121014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2042121091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1731 + ... + 63931.

It is an arithmetic number, because the mean of its divisors is an integer number (510554016).

Almost surely, 2^2042121031 is an apocalyptic number.

2042121031 is a deficient number, since it is larger than the sum of its proper divisors (95033).

2042121031 is an equidigital number, since it uses as much as digits as its factorization.

2042121031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95032.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2042121031 is about 45189.8332703275. The cubic root of 2042121031 is about 1268.7045361628.

Adding to 2042121031 its reverse (1301212402), we get a palindrome (3343333433).

The spelling of 2042121031 in words is "two billion, forty-two million, one hundred twenty-one thousand, thirty-one".