42186606 has 64 divisors (see below), whose sum is σ = 106168320. Its totient is φ = 10856160.

The previous prime is 42186601. The next prime is 42186611. The reversal of 42186606 is 60668124.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42186601) and next prime (42186611).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42186601) 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, 58315 + ... + 59033.

It is an arithmetic number, because the mean of its divisors is an integer number (1658880).

Almost surely, 2^42186606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42186606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53084160).

42186606 is an abundant number, since it is smaller than the sum of its proper divisors (63981714).

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

42186606 is a wasteful number, since it uses less digits than its factorization.

42186606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 42186606 is about 6495.1217078666. The cubic root of 42186606 is about 348.1167034930.

The spelling of 42186606 in words is "forty-two million, one hundred eighty-six thousand, six hundred six".