42781112 has 32 divisors (see below), whose sum is σ = 92657520. Its totient is φ = 18301440.

The previous prime is 42781099. The next prime is 42781159. The reversal of 42781112 is 21118724.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12803 + ... + 15794.

Almost surely, 2^42781112 is an apocalyptic number.

It is an amenable number.

42781112 is an abundant number, since it is smaller than the sum of its proper divisors (49876408).

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

42781112 is a wasteful number, since it uses less digits than its factorization.

42781112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28631 (or 28627 counting only the distinct ones).

The product of its digits is 896, while the sum is 26.

The square root of 42781112 is about 6540.7271766983. The cubic root of 42781112 is about 349.7443357396.

Adding to 42781112 its reverse (21118724), we get a palindrome (63899836).

The spelling of 42781112 in words is "forty-two million, seven hundred eighty-one thousand, one hundred twelve".