42186612 has 96 divisors (see below), whose sum is σ = 114526720. Its totient is φ = 11975040.

The previous prime is 42186611. The next prime is 42186643. The reversal of 42186612 is 21668124.

It is a self number, because there is not a number n which added to its sum of digits gives 42186612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42186611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127287 + ... + 127617.

Almost surely, 2^42186612 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 42186612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57263360).

42186612 is an abundant number, since it is smaller than the sum of its proper divisors (72340108).

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

42186612 is a wasteful number, since it uses less digits than its factorization.

42186612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413 (or 411 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 42186612 is about 6495.1221697517. The cubic root of 42186612 is about 348.1167199966.

The spelling of 42186612 in words is "forty-two million, one hundred eighty-six thousand, six hundred twelve".