22166042 has 8 divisors (see below), whose sum is σ = 33269076. Its totient is φ = 11076352.

The previous prime is 22166033. The next prime is 22166047. The reversal of 22166042 is 24066122.

It can be written as a sum of positive squares in 2 ways, for example, as 16168441 + 5997601 = 4021^2 + 2449^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 22165999 and 22166017.

It is not an unprimeable number, because it can be changed into a prime (22166047) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4508 + ... + 8040.

Almost surely, 2^22166042 is an apocalyptic number.

22166042 is a deficient number, since it is larger than the sum of its proper divisors (11103034).

22166042 is a wasteful number, since it uses less digits than its factorization.

22166042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6672.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 22166042 is about 4708.0826245936. The cubic root of 22166042 is about 280.9071006593.

The spelling of 22166042 in words is "twenty-two million, one hundred sixty-six thousand, forty-two".