2042404091 has 16 divisors (see below), whose sum is σ = 2520403200. Its totient is φ = 1611677088.

The previous prime is 2042404087. The next prime is 2042404097. The reversal of 2042404091 is 1904042402.

It is not a de Polignac number, because 2042404091 - 2² = 2042404087 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2042404091.

It is not an unprimeable number, because it can be changed into a prime (2042404097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4880 + ... + 64098.

It is an arithmetic number, because the mean of its divisors is an integer number (157525200).

Almost surely, 2^2042404091 is an apocalyptic number.

2042404091 is a deficient number, since it is larger than the sum of its proper divisors (477999109).

2042404091 is a wasteful number, since it uses less digits than its factorization.

2042404091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59618.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 2042404091 is about 45192.9650609473. The cubic root of 2042404091 is about 1268.7631521653.

Adding to 2042404091 its reverse (1904042402), we get a palindrome (3946446493).

The spelling of 2042404091 in words is "two billion, forty-two million, four hundred four thousand, ninety-one".