22042417 has 4 divisors (see below), whose sum is σ = 22638196. Its totient is φ = 21446640.

The previous prime is 22042357. The next prime is 22042429. The reversal of 22042417 is 71424022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19000881 + 3041536 = 4359^2 + 1744^2 .

It is a cyclic number.

It is not a de Polignac number, because 22042417 - 2¹⁵ = 22009649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22042477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297834 + ... + 297907.

It is an arithmetic number, because the mean of its divisors is an integer number (5659549).

Almost surely, 2^22042417 is an apocalyptic number.

It is an amenable number.

22042417 is a deficient number, since it is larger than the sum of its proper divisors (595779).

22042417 is an equidigital number, since it uses as much as digits as its factorization.

22042417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595778.

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 22042417 is about 4694.9352498197. The cubic root of 22042417 is about 280.3838994271.

Adding to 22042417 its reverse (71424022), we get a palindrome (93466439).

The spelling of 22042417 in words is "twenty-two million, forty-two thousand, four hundred seventeen".