422442111 has 16 divisors (see below), whose sum is σ = 693238784. Its totient is φ = 222826464.

The previous prime is 422442109. The next prime is 422442113. The reversal of 422442111 is 111244224.

It is an interprime number because it is at equal distance from previous prime (422442109) and next prime (422442113).

It is not a de Polignac number, because 422442111 - 2¹ = 422442109 is a prime.

It is a super-2 number, since 2×422442111² = 356914674292272642, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422442113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 773431 + ... + 773976.

It is an arithmetic number, because the mean of its divisors is an integer number (43327424).

Almost surely, 2^422442111 is an apocalyptic number.

422442111 is a deficient number, since it is larger than the sum of its proper divisors (270796673).

422442111 is a wasteful number, since it uses less digits than its factorization.

422442111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547430.

The product of its digits is 512, while the sum is 21.

The square root of 422442111 is about 20553.3965806141. The cubic root of 422442111 is about 750.3359153032.

Adding to 422442111 its reverse (111244224), we get a palindrome (533686335).

The spelling of 422442111 in words is "four hundred twenty-two million, four hundred forty-two thousand, one hundred eleven".