22043242 has 8 divisors (see below), whose sum is σ = 35608356. Its totient is φ = 10173792.

The previous prime is 22043233. The next prime is 22043243. The reversal of 22043242 is 24234022.

It can be written as a sum of positive squares in 2 ways, for example, as 20169081 + 1874161 = 4491^2 + 1369^2 .

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

It is not an unprimeable number, because it can be changed into a prime (22043243) 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, 423883 + ... + 423934.

Almost surely, 2^22043242 is an apocalyptic number.

22043242 is a deficient number, since it is larger than the sum of its proper divisors (13565114).

22043242 is a wasteful number, since it uses less digits than its factorization.

22043242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847832.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 22043242 is about 4695.0231096343. The cubic root of 22043242 is about 280.3873974378.

Adding to 22043242 its reverse (24234022), we get a palindrome (46277264).

The spelling of 22043242 in words is "twenty-two million, forty-three thousand, two hundred forty-two".