16442122 has 4 divisors (see below), whose sum is σ = 24663186. Its totient is φ = 8221060.

The previous prime is 16442113. The next prime is 16442131. The reversal of 16442122 is 22124461.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22124461 = 41 ⋅539621.

It is an interprime number because it is at equal distance from previous prime (16442113) and next prime (16442131).

It can be written as a sum of positive squares in only one way, i.e., 13169641 + 3272481 = 3629^2 + 1809^2 .

It is a super-3 number, since 3×16442122³ (a number of 23 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 16442093 and 16442102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4110529 + ... + 4110532.

Almost surely, 2^16442122 is an apocalyptic number.

16442122 is a deficient number, since it is larger than the sum of its proper divisors (8221064).

16442122 is an equidigital number, since it uses as much as digits as its factorization.

16442122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8221063.

The product of its digits is 768, while the sum is 22.

The square root of 16442122 is about 4054.8886544516. Note that the first 3 decimals coincide. The cubic root of 16442122 is about 254.2841489073.

Adding to 16442122 its reverse (22124461), we get a palindrome (38566583).

The spelling of 16442122 in words is "sixteen million, four hundred forty-two thousand, one hundred twenty-two".