42004223 has 4 divisors (see below), whose sum is σ = 42022680. Its totient is φ = 41985768.

The previous prime is 42004219. The next prime is 42004301. The reversal of 42004223 is 32240024.

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 42004223 - 2² = 42004219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42004423) 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, 5240 + ... + 10557.

It is an arithmetic number, because the mean of its divisors is an integer number (10505670).

Almost surely, 2^42004223 is an apocalyptic number.

42004223 is a deficient number, since it is larger than the sum of its proper divisors (18457).

42004223 is a wasteful number, since it uses less digits than its factorization.

42004223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18456.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 42004223 is about 6481.0665017418. The cubic root of 42004223 is about 347.6143143050.

Adding to 42004223 its reverse (32240024), we get a palindrome (74244247).

The spelling of 42004223 in words is "forty-two million, four thousand, two hundred twenty-three".