20036042 has 16 divisors (see below), whose sum is σ = 33483240. Its totient is φ = 8928192.

The previous prime is 20036041. The next prime is 20036083. The reversal of 20036042 is 24063002.

It can be written as a sum of positive squares in 4 ways, for example, as 19280881 + 755161 = 4391^2 + 869^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20036042.

It is not an unprimeable number, because it can be changed into a prime (20036041) 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 7 ways as a sum of consecutive naturals, for example, 12533 + ... + 14040.

Almost surely, 2^20036042 is an apocalyptic number.

20036042 is a deficient number, since it is larger than the sum of its proper divisors (13447198).

20036042 is a wasteful number, since it uses less digits than its factorization.

20036042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26617.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 20036042 is about 4476.1637592921. The cubic root of 20036042 is about 271.6047188765.

Adding to 20036042 its reverse (24063002), we get a palindrome (44099044).

The spelling of 20036042 in words is "twenty million, thirty-six thousand, forty-two".