42204231 has 6 divisors (see below), whose sum is σ = 60961680. Its totient is φ = 28136148.

The previous prime is 42204229. The next prime is 42204247. The reversal of 42204231 is 13240224.

It is not a de Polignac number, because 42204231 - 2¹ = 42204229 is a prime.

It is a super-2 number, since 2×42204231² = 3562394228602722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42202231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2344671 + ... + 2344688.

It is an arithmetic number, because the mean of its divisors is an integer number (10160280).

Almost surely, 2^42204231 is an apocalyptic number.

42204231 is a deficient number, since it is larger than the sum of its proper divisors (18757449).

42204231 is a wasteful number, since it uses less digits than its factorization.

42204231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4689365 (or 4689362 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 42204231 is about 6496.4783536929. The cubic root of 42204231 is about 348.1651762448.

Adding to 42204231 its reverse (13240224), we get a palindrome (55444455).

The spelling of 42204231 in words is "forty-two million, two hundred four thousand, two hundred thirty-one".