42242222 has 8 divisors (see below), whose sum is σ = 69123672. Its totient is φ = 19201000.

The previous prime is 42242173. The next prime is 42242251. The reversal of 42242222 is 22224224.

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

It is a junction number, because it is equal to n+sod(n) for n = 42242194 and 42242203.

It is a congruent number.

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, 960029 + ... + 960072.

It is an arithmetic number, because the mean of its divisors is an integer number (8640459).

Almost surely, 2^42242222 is an apocalyptic number.

42242222 is a deficient number, since it is larger than the sum of its proper divisors (26881450).

42242222 is a wasteful number, since it uses less digits than its factorization.

42242222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920114.

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

The square root of 42242222 is about 6499.4016647688. The cubic root of 42242222 is about 348.2696142437.

Adding to 42242222 its reverse (22224224), we get a palindrome (64466446).

It can be divided in two parts, 4224222 and 2, that added together give a palindrome (4224224).

The spelling of 42242222 in words is "forty-two million, two hundred forty-two thousand, two hundred twenty-two".