42722223 has 8 divisors (see below), whose sum is σ = 57486000. Its totient is φ = 28219968.

The previous prime is 42722221. The next prime is 42722233. The reversal of 42722223 is 32222724.

It is a happy number.

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

It is not a de Polignac number, because 42722223 - 2¹ = 42722221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42722193 and 42722202.

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 7 ways as a sum of consecutive naturals, for example, 64998 + ... + 65651.

It is an arithmetic number, because the mean of its divisors is an integer number (7185750).

Almost surely, 2^42722223 is an apocalyptic number.

42722223 is a deficient number, since it is larger than the sum of its proper divisors (14763777).

42722223 is a wasteful number, since it uses less digits than its factorization.

42722223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130761.

The product of its digits is 2688, while the sum is 24.

The square root of 42722223 is about 6536.2239098733. The cubic root of 42722223 is about 349.5837855126.

Adding to 42722223 its reverse (32222724), we get a palindrome (74944947).

The spelling of 42722223 in words is "forty-two million, seven hundred twenty-two thousand, two hundred twenty-three".