2042081431 has 4 divisors (see below), whose sum is σ = 2199164632. Its totient is φ = 1884998232.

The previous prime is 2042081413. The next prime is 2042081471. The reversal of 2042081431 is 1341802402.

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

It is not a de Polignac number, because 2042081431 - 2²¹ = 2039984279 is a prime.

It is a super-2 number, since 2×2042081431² = 8340193141670015522, 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 = 2042081396 and 2042081405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2042081471) 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 in 3 ways as a sum of consecutive naturals, for example, 78541581 + ... + 78541606.

It is an arithmetic number, because the mean of its divisors is an integer number (549791158).

Almost surely, 2^2042081431 is an apocalyptic number.

2042081431 is a deficient number, since it is larger than the sum of its proper divisors (157083201).

2042081431 is a wasteful number, since it uses less digits than its factorization.

2042081431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157083200.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 2042081431 is about 45189.3951165536. The cubic root of 2042081431 is about 1268.6963353716.

Adding to 2042081431 its reverse (1341802402), we get a palindrome (3383883833).

The spelling of 2042081431 in words is "two billion, forty-two million, eighty-one thousand, four hundred thirty-one".