20042023 has 4 divisors (see below), whose sum is σ = 20099800. Its totient is φ = 19984248.

The previous prime is 20041981. The next prime is 20042041. The reversal of 20042023 is 32024002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20042023 - 2¹³ = 20033831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20041994 and 20042012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20042053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28365 + ... + 29062.

It is an arithmetic number, because the mean of its divisors is an integer number (5024950).

Almost surely, 2^20042023 is an apocalyptic number.

20042023 is a deficient number, since it is larger than the sum of its proper divisors (57777).

20042023 is an equidigital number, since it uses as much as digits as its factorization.

20042023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57776.

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 20042023 is about 4476.8318038541. The cubic root of 20042023 is about 271.6317419484.

Adding to 20042023 its reverse (32024002), we get a palindrome (52066025).

The spelling of 20042023 in words is "twenty million, forty-two thousand, twenty-three".