42512112 has 120 divisors (see below), whose sum is σ = 124962240. Its totient is φ = 13478400.

The previous prime is 42512089. The next prime is 42512123. The reversal of 42512112 is 21121524.

42512112 is a `hidden beast` number, since 42 + 512 + 112 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 420862 + ... + 420962.

It is an arithmetic number, because the mean of its divisors is an integer number (1041352).

Almost surely, 2^42512112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42512112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62481120).

42512112 is an abundant number, since it is smaller than the sum of its proper divisors (82450128).

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

42512112 is a wasteful number, since it uses less digits than its factorization.

42512112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 222 counting only the distinct ones).

The product of its digits is 160, while the sum is 18.

The square root of 42512112 is about 6520.1312870218. The cubic root of 42512112 is about 349.0097506054.

Adding to 42512112 its reverse (21121524), we get a palindrome (63633636).

It can be divided in two parts, 42512 and 112, that added together give a palindrome (42624).

The spelling of 42512112 in words is "forty-two million, five hundred twelve thousand, one hundred twelve".