22240042 has 24 divisors (see below), whose sum is σ = 37944900. Its totient is φ = 9757440.

The previous prime is 22240037. The next prime is 22240087. The reversal of 22240042 is 24004222.

It can be written as a sum of positive squares in 2 ways, for example, as 21446161 + 793881 = 4631^2 + 891^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22239998 and 22240025.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 5434 + ... + 8602.

Almost surely, 2^22240042 is an apocalyptic number.

22240042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22240042 is a deficient number, since it is larger than the sum of its proper divisors (15704858).

22240042 is a wasteful number, since it uses less digits than its factorization.

22240042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3222 (or 3211 counting only the distinct ones).

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

The square root of 22240042 is about 4715.9349020104. The cubic root of 22240042 is about 281.2193506025.

Adding to 22240042 its reverse (24004222), we get a palindrome (46244264).

The spelling of 22240042 in words is "twenty-two million, two hundred forty thousand, forty-two".