42542212 has 6 divisors (see below), whose sum is σ = 74448878. Its totient is φ = 21271104.

The previous prime is 42542209. The next prime is 42542221. The reversal of 42542212 is 21224524.

It can be written as a sum of positive squares in only one way, i.e., 38763076 + 3779136 = 6226^2 + 1944^2 .

It is a zygodrome in base 3.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5317773 + ... + 5317780.

Almost surely, 2^42542212 is an apocalyptic number.

It is an amenable number.

42542212 is a deficient number, since it is larger than the sum of its proper divisors (31906666).

42542212 is a wasteful number, since it uses less digits than its factorization.

42542212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10635557 (or 10635555 counting only the distinct ones).

The product of its digits is 1280, while the sum is 22.

The square root of 42542212 is about 6522.4391143191. The cubic root of 42542212 is about 349.0921013727.

Adding to 42542212 its reverse (21224524), we get a palindrome (63766736).

The spelling of 42542212 in words is "forty-two million, five hundred forty-two thousand, two hundred twelve".