2042091 has 20 divisors (see below), whose sum is σ = 3232152. Its totient is φ = 1280448.

The previous prime is 2042083. The next prime is 2042107. The reversal of 2042091 is 1902402.

It is not a de Polignac number, because 2042091 - 2³ = 2042083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2042021) 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 19 ways as a sum of consecutive naturals, for example, 636 + ... + 2118.

2^2042091 is an apocalyptic number.

2042091 is a deficient number, since it is larger than the sum of its proper divisors (1190061).

2042091 is a wasteful number, since it uses less digits than its factorization.

2042091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512 (or 1503 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2042091 is about 1429.0174946445. The cubic root of 2042091 is about 126.8698317032.

Adding to 2042091 its reverse (1902402), we get a palindrome (3944493).

The spelling of 2042091 in words is "two million, forty-two thousand, ninety-one".