2042571 has 4 divisors (see below), whose sum is σ = 2723432. Its totient is φ = 1361712.

The previous prime is 2042549. The next prime is 2042581. The reversal of 2042571 is 1752402.

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

It is not a de Polignac number, because 2042571 - 2⁹ = 2042059 is a prime.

It is a D-number.

It is a Duffinian number.

2042571 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2042531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340426 + ... + 340431.

It is an arithmetic number, because the mean of its divisors is an integer number (680858).

2^2042571 is an apocalyptic number.

2042571 is a deficient number, since it is larger than the sum of its proper divisors (680861).

2042571 is an equidigital number, since it uses as much as digits as its factorization.

2042571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680860.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 2042571 is about 1429.1854323355. The cubic root of 2042571 is about 126.8797713106.

Adding to 2042571 its reverse (1752402), we get a palindrome (3794973).

It can be divided in two parts, 204 and 2571, that added together give a triangular number (2775 = T₇₄).

The spelling of 2042571 in words is "two million, forty-two thousand, five hundred seventy-one".