42864218 has 8 divisors (see below), whose sum is σ = 64326612. Its totient is φ = 21422016.

The previous prime is 42864193. The next prime is 42864221. The reversal of 42864218 is 81246824.

It can be written as a sum of positive squares in 2 ways, for example, as 30283009 + 12581209 = 5503^2 + 3547^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2546 + ... + 9602.

Almost surely, 2^42864218 is an apocalyptic number.

42864218 is a deficient number, since it is larger than the sum of its proper divisors (21462394).

42864218 is a wasteful number, since it uses less digits than its factorization.

42864218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10096.

The product of its digits is 24576, while the sum is 35.

The square root of 42864218 is about 6547.0770577411. The cubic root of 42864218 is about 349.9706587648.

It can be divided in two parts, 428 and 64218, that added together give a palindrome (64646).

The spelling of 42864218 in words is "forty-two million, eight hundred sixty-four thousand, two hundred eighteen".