22143342 has 32 divisors (see below), whose sum is σ = 49771008. Its totient is φ = 6516576.

The previous prime is 22143311. The next prime is 22143343. The reversal of 22143342 is 24334122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22143343) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4378 + ... + 7965.

It is an arithmetic number, because the mean of its divisors is an integer number (1555344).

Almost surely, 2^22143342 is an apocalyptic number.

22143342 is an abundant number, since it is smaller than the sum of its proper divisors (27627666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22143342 is a wasteful number, since it uses less digits than its factorization.

22143342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12384.

The product of its digits is 1152, while the sum is 21.

The square root of 22143342 is about 4705.6712592360. The cubic root of 22143342 is about 280.8111766154.

Adding to 22143342 its reverse (24334122), we get a palindrome (46477464).

The spelling of 22143342 in words is "twenty-two million, one hundred forty-three thousand, three hundred forty-two".