22660042 has 4 divisors (see below), whose sum is σ = 33990066. Its totient is φ = 11330020.

The previous prime is 22660019. The next prime is 22660051. The reversal of 22660042 is 24006622.

It is a happy number.

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., 21169201 + 1490841 = 4601^2 + 1221^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22659995 and 22660022.

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 as a sum of consecutive naturals, namely, 5665009 + ... + 5665012.

Almost surely, 2^22660042 is an apocalyptic number.

22660042 is a deficient number, since it is larger than the sum of its proper divisors (11330024).

22660042 is a wasteful number, since it uses less digits than its factorization.

22660042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11330023.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 22660042 is about 4760.2565056938. The cubic root of 22660042 is about 282.9785847022.

Adding to 22660042 its reverse (24006622), we get a palindrome (46666664).

The spelling of 22660042 in words is "twenty-two million, six hundred sixty thousand, forty-two".