42066023 has 2 divisors, whose sum is σ = 42066024. Its totient is φ = 42066022.

The previous prime is 42065983. The next prime is 42066067. The reversal of 42066023 is 32066024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42066023 - 2⁸ = 42065767 is a prime.

It is equal to p_2551352 and since 42066023 and 2551352 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42066023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42066223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21033011 + 21033012.

It is an arithmetic number, because the mean of its divisors is an integer number (21033012).

Almost surely, 2^42066023 is an apocalyptic number.

42066023 is a deficient number, since it is larger than the sum of its proper divisors (1).

42066023 is an equidigital number, since it uses as much as digits as its factorization.

42066023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 42066023 is about 6485.8324831898. The cubic root of 42066023 is about 347.7847101689.

Subtracting from 42066023 its reverse (32066024), we obtain a palindrome (9999999).

The spelling of 42066023 in words is "forty-two million, sixty-six thousand, twenty-three".