42240212 has 12 divisors (see below), whose sum is σ = 84480480. Its totient is φ = 18102936.

The previous prime is 42240181. The next prime is 42240221. The reversal of 42240212 is 21204224.

It is a happy number.

42240212 is an admirable number.

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, 754262 + ... + 754317.

It is an arithmetic number, because the mean of its divisors is an integer number (7040040).

Almost surely, 2^42240212 is an apocalyptic number.

It is an amenable number.

42240212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42240212 is a wasteful number, since it uses less digits than its factorization.

42240212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508590 (or 1508588 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 42240212 is about 6499.2470333109. The cubic root of 42240212 is about 348.2640902838.

Adding to 42240212 its reverse (21204224), we get a palindrome (63444436).

The spelling of 42240212 in words is "forty-two million, two hundred forty thousand, two hundred twelve".