42688222 has 8 divisors (see below), whose sum is σ = 64060056. Its totient is φ = 21334872.

The previous prime is 42688213. The next prime is 42688223. The reversal of 42688222 is 22288624.

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

It is a super-3 number, since 3×42688222³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42688223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6888 + ... + 11524.

It is an arithmetic number, because the mean of its divisors is an integer number (8007507).

Almost surely, 2^42688222 is an apocalyptic number.

42688222 is a deficient number, since it is larger than the sum of its proper divisors (21371834).

42688222 is a wasteful number, since it uses less digits than its factorization.

42688222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9242.

The product of its digits is 24576, while the sum is 34.

The square root of 42688222 is about 6533.6224255768. The cubic root of 42688222 is about 349.4910207319.

The spelling of 42688222 in words is "forty-two million, six hundred eighty-eight thousand, two hundred twenty-two".