42112242 has 12 divisors (see below), whose sum is σ = 91243230. Its totient is φ = 14037408.

The previous prime is 42112211. The next prime is 42112261. The reversal of 42112242 is 24221124.

42112242 is a `hidden beast` number, since 421 + 1 + 2 + 242 = 666.

It can be written as a sum of positive squares in only one way, i.e., 40182921 + 1929321 = 6339^2 + 1389^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 2339569 = 42112242 / (4 + 2 + 1 + 1 + 2 + 2 + 4 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1169767 + ... + 1169802.

Almost surely, 2^42112242 is an apocalyptic number.

42112242 is an abundant number, since it is smaller than the sum of its proper divisors (49130988).

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

42112242 is a wasteful number, since it uses less digits than its factorization.

42112242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2339577 (or 2339574 counting only the distinct ones).

The product of its digits is 256, while the sum is 18.

The square root of 42112242 is about 6489.3945788494. The cubic root of 42112242 is about 347.9120368243.

Adding to 42112242 its reverse (24221124), we get a palindrome (66333366).

The spelling of 42112242 in words is "forty-two million, one hundred twelve thousand, two hundred forty-two".