42722222 has 8 divisors (see below), whose sum is σ = 67456200. Its totient is φ = 20236824.

The previous prime is 42722221. The next prime is 42722233. The reversal of 42722222 is 22222724.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42722221) 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, 562097 + ... + 562172.

It is an arithmetic number, because the mean of its divisors is an integer number (8432025).

Almost surely, 2^42722222 is an apocalyptic number.

42722222 is a deficient number, since it is larger than the sum of its proper divisors (24733978).

42722222 is a wasteful number, since it uses less digits than its factorization.

42722222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124290.

The product of its digits is 1792, while the sum is 23.

The square root of 42722222 is about 6536.2238333766. The cubic root of 42722222 is about 349.5837827850.

Adding to 42722222 its reverse (22222724), we get a palindrome (64944946).

The spelling of 42722222 in words is "forty-two million, seven hundred twenty-two thousand, two hundred twenty-two".