22040242 has 16 divisors (see below), whose sum is σ = 37844352. Its totient is φ = 9430560.

The previous prime is 22040231. The next prime is 22040267. The reversal of 22040242 is 24204022.

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 in 7 ways as a sum of consecutive naturals, for example, 14142 + ... + 15622.

It is an arithmetic number, because the mean of its divisors is an integer number (2365272).

Almost surely, 2^22040242 is an apocalyptic number.

22040242 is a deficient number, since it is larger than the sum of its proper divisors (15804110).

22040242 is a wasteful number, since it uses less digits than its factorization.

22040242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 22040242 is about 4694.7036115180. The cubic root of 22040242 is about 280.3746769805.

Adding to 22040242 its reverse (24204022), we get a palindrome (46244264).

The spelling of 22040242 in words is "twenty-two million, forty thousand, two hundred forty-two".