22142305 has 8 divisors (see below), whose sum is σ = 26649000. Its totient is φ = 17661696.

The previous prime is 22142299. The next prime is 22142327. The reversal of 22142305 is 50324122.

It can be written as a sum of positive squares in 4 ways, for example, as 1065024 + 21077281 = 1032^2 + 4591^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 22142305 - 2³ = 22142297 is a prime.

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 in 7 ways as a sum of consecutive naturals, for example, 4600 + ... + 8089.

It is an arithmetic number, because the mean of its divisors is an integer number (3331125).

Almost surely, 2^22142305 is an apocalyptic number.

It is an amenable number.

22142305 is a deficient number, since it is larger than the sum of its proper divisors (4506695).

22142305 is a wasteful number, since it uses less digits than its factorization.

22142305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13043.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 22142305 is about 4705.5610717533. The cubic root of 22142305 is about 280.8067929691.

Adding to 22142305 its reverse (50324122), we get a palindrome (72466427).

The spelling of 22142305 in words is "twenty-two million, one hundred forty-two thousand, three hundred five".