22200042 has 16 divisors (see below), whose sum is σ = 44625600. Its totient is φ = 7362432.

The previous prime is 22200023. The next prime is 22200043. The reversal of 22200042 is 24000222.

It is a happy number.

It is a super-3 number, since 3×22200042³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (22200043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8103 + ... + 10490.

It is an arithmetic number, because the mean of its divisors is an integer number (2789100).

Almost surely, 2^22200042 is an apocalyptic number.

22200042 is an abundant number, since it is smaller than the sum of its proper divisors (22425558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22200042 is a wasteful number, since it uses less digits than its factorization.

22200042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18797.

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 22200042 is about 4711.6920527556. The cubic root of 22200042 is about 281.0506530100.

Adding to 22200042 its reverse (24000222), we get a palindrome (46200264).

The spelling of 22200042 in words is "twenty-two million, two hundred thousand, forty-two".