22243042 has 4 divisors (see below), whose sum is σ = 33364566. Its totient is φ = 11121520.

The previous prime is 22243037. The next prime is 22243043. The reversal of 22243042 is 24034222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24034222 = 2 ⋅12017111.

It can be written as a sum of positive squares in only one way, i.e., 22099401 + 143641 = 4701^2 + 379^2 .

It is not an unprimeable number, because it can be changed into a prime (22243043) 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 as a sum of consecutive naturals, namely, 5560759 + ... + 5560762.

Almost surely, 2^22243042 is an apocalyptic number.

22243042 is a deficient number, since it is larger than the sum of its proper divisors (11121524).

22243042 is a wasteful number, since it uses less digits than its factorization.

22243042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11121523.

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

The square root of 22243042 is about 4716.2529618332. The cubic root of 22243042 is about 281.2319947650.

Adding to 22243042 its reverse (24034222), we get a palindrome (46277264).

It can be divided in two parts, 222 and 43042, that added together give a square (43264 = 208²).

The spelling of 22243042 in words is "twenty-two million, two hundred forty-three thousand, forty-two".