42209212 has 12 divisors (see below), whose sum is σ = 74448640. Its totient is φ = 20938176.

The previous prime is 42209207. The next prime is 42209221. The reversal of 42209212 is 21290224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41037 + ... + 42052.

Almost surely, 2^42209212 is an apocalyptic number.

It is an amenable number.

42209212 is a deficient number, since it is larger than the sum of its proper divisors (32239428).

42209212 is a wasteful number, since it uses less digits than its factorization.

42209212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83220 (or 83218 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 42209212 is about 6496.8617039306. The cubic root of 42209212 is about 348.1788726798.

Adding to 42209212 its reverse (21290224), we get a palindrome (63499436).

The spelling of 42209212 in words is "forty-two million, two hundred nine thousand, two hundred twelve".