20042333 has 4 divisors (see below), whose sum is σ = 20052480. Its totient is φ = 20032188.

The previous prime is 20042327. The next prime is 20042353. The reversal of 20042333 is 33324002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20042333 is a prime.

It is a super-2 number, since 2×20042333² = 803390224165778, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20042353) 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, 1043 + ... + 6416.

It is an arithmetic number, because the mean of its divisors is an integer number (5013120).

Almost surely, 2^20042333 is an apocalyptic number.

It is an amenable number.

20042333 is a deficient number, since it is larger than the sum of its proper divisors (10147).

20042333 is an equidigital number, since it uses as much as digits as its factorization.

20042333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10146.

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 20042333 is about 4476.8664264193. The cubic root of 20042333 is about 271.6331424292.

Adding to 20042333 its reverse (33324002), we get a palindrome (53366335).

The spelling of 20042333 in words is "twenty million, forty-two thousand, three hundred thirty-three".