42222242 has 8 divisors (see below), whose sum is σ = 63960732. Its totient is φ = 20902000.

The previous prime is 42222239. The next prime is 42222253. The reversal of 42222242 is 24222224.

It can be written as a sum of positive squares in 2 ways, for example, as 41615401 + 606841 = 6451^2 + 779^2 .

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, 104309 + ... + 104712.

Almost surely, 2^42222242 is an apocalyptic number.

42222242 is a deficient number, since it is larger than the sum of its proper divisors (21738490).

42222242 is a wasteful number, since it uses less digits than its factorization.

42222242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209124.

The product of its digits is 1024, while the sum is 20.

The square root of 42222242 is about 6497.8644184070. The cubic root of 42222242 is about 348.2146966445.

Adding to 42222242 its reverse (24222224), we get a palindrome (66444466).

It can be divided in two parts, 4222224 and 2, that multiplied together give a palindrome (8444448).

The spelling of 42222242 in words is "forty-two million, two hundred twenty-two thousand, two hundred forty-two".