42946218 has 96 divisors (see below), whose sum is σ = 111196800. Its totient is φ = 11726208.

The previous prime is 42946181. The next prime is 42946219. The reversal of 42946218 is 81264924.

42946218 is a `hidden beast` number, since 4 + 29 + 4 + 621 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (42946219) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 393948 + ... + 394056.

It is an arithmetic number, because the mean of its divisors is an integer number (1158300).

Almost surely, 2^42946218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42946218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55598400).

42946218 is an abundant number, since it is smaller than the sum of its proper divisors (68250582).

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

42946218 is a wasteful number, since it uses less digits than its factorization.

42946218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 233 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 42946218 is about 6553.3364021695. The cubic root of 42946218 is about 350.1936832758.

The spelling of 42946218 in words is "forty-two million, nine hundred forty-six thousand, two hundred eighteen".