20042933 has 2 divisors, whose sum is σ = 20042934. Its totient is φ = 20042932.

The previous prime is 20042927. The next prime is 20042947. The reversal of 20042933 is 33924002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19864849 + 178084 = 4457^2 + 422^2 .

It is a cyclic number.

It is not a de Polignac number, because 20042933 - 2⁴ = 20042917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20042899 and 20042908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20042903) 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 as a sum of consecutive naturals, namely, 10021466 + 10021467.

It is an arithmetic number, because the mean of its divisors is an integer number (10021467).

Almost surely, 2^20042933 is an apocalyptic number.

It is an amenable number.

20042933 is a deficient number, since it is larger than the sum of its proper divisors (1).

20042933 is an equidigital number, since it uses as much as digits as its factorization.

20042933 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 20042933 is about 4476.9334370750. The cubic root of 20042933 is about 271.6358529962.

Adding to 20042933 its reverse (33924002), we get a palindrome (53966935).

The spelling of 20042933 in words is "twenty million, forty-two thousand, nine hundred thirty-three".