22743242 has 4 divisors (see below), whose sum is σ = 34114866. Its totient is φ = 11371620.

The previous prime is 22743239. The next prime is 22743257. The reversal of 22743242 is 24234722.

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

It can be written as a sum of positive squares in only one way, i.e., 18412681 + 4330561 = 4291^2 + 2081^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5685809 + ... + 5685812.

Almost surely, 2^22743242 is an apocalyptic number.

22743242 is a deficient number, since it is larger than the sum of its proper divisors (11371624).

22743242 is a wasteful number, since it uses less digits than its factorization.

22743242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11371623.

The product of its digits is 5376, while the sum is 26.

The square root of 22743242 is about 4768.9875235735. The cubic root of 22743242 is about 283.3244955336.

Adding to 22743242 its reverse (24234722), we get a palindrome (46977964).

The spelling of 22743242 in words is "twenty-two million, seven hundred forty-three thousand, two hundred forty-two".