42218706 has 16 divisors (see below), whose sum is σ = 85507200. Its totient is φ = 13894608.

The previous prime is 42218699. The next prime is 42218711. The reversal of 42218706 is 60781224.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44061 + ... + 45008.

It is an arithmetic number, because the mean of its divisors is an integer number (5344200).

Almost surely, 2^42218706 is an apocalyptic number.

42218706 is an abundant number, since it is smaller than the sum of its proper divisors (43288494).

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

42218706 is a wasteful number, since it uses less digits than its factorization.

42218706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89153.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 42218706 is about 6497.5923233148. The cubic root of 42218706 is about 348.2049756895.

It can be divided in two parts, 42218 and 706, that added together give a palindrome (42924).

The spelling of 42218706 in words is "forty-two million, two hundred eighteen thousand, seven hundred six".