42613866 has 48 divisors (see below), whose sum is σ = 99874944. Its totient is φ = 13080192.

The previous prime is 42613859. The next prime is 42613867. The reversal of 42613866 is 66831624.

It is a self number, because there is not a number n which added to its sum of digits gives 42613866.

It is not an unprimeable number, because it can be changed into a prime (42613867) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12901 + ... + 15863.

It is an arithmetic number, because the mean of its divisors is an integer number (2080728).

Almost surely, 2^42613866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42613866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49937472).

42613866 is an abundant number, since it is smaller than the sum of its proper divisors (57261078).

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

42613866 is a wasteful number, since it uses less digits than its factorization.

42613866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3035 (or 3032 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 42613866 is about 6527.9296871213. The cubic root of 42613866 is about 349.2879837974.

The spelling of 42613866 in words is "forty-two million, six hundred thirteen thousand, eight hundred sixty-six".