42126212 has 12 divisors (see below), whose sum is σ = 76263180. Its totient is φ = 20336736.

The previous prime is 42126169. The next prime is 42126223. The reversal of 42126212 is 21262124.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 32787076 + 9339136 = 5726^2 + 3056^2 .

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, 181463 + ... + 181694.

It is an arithmetic number, because the mean of its divisors is an integer number (6355265).

Almost surely, 2^42126212 is an apocalyptic number.

It is an amenable number.

42126212 is a deficient number, since it is larger than the sum of its proper divisors (34136968).

42126212 is a wasteful number, since it uses less digits than its factorization.

42126212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363190 (or 363188 counting only the distinct ones).

The product of its digits is 384, while the sum is 20.

The square root of 42126212 is about 6490.4708611934. The cubic root of 42126212 is about 347.9505038162.

Adding to 42126212 its reverse (21262124), we get a palindrome (63388336).

The spelling of 42126212 in words is "forty-two million, one hundred twenty-six thousand, two hundred twelve".