22223142 has 24 divisors (see below), whose sum is σ = 48831120. Its totient is φ = 7302960.

The previous prime is 22223137. The next prime is 22223143. The reversal of 22223142 is 24132222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22223143) 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 11 ways as a sum of consecutive naturals, for example, 7417 + ... + 9972.

It is an arithmetic number, because the mean of its divisors is an integer number (2034630).

Almost surely, 2^22223142 is an apocalyptic number.

22223142 is an abundant number, since it is smaller than the sum of its proper divisors (26607978).

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

22223142 is a wasteful number, since it uses less digits than its factorization.

22223142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17468 (or 17465 counting only the distinct ones).

The product of its digits is 384, while the sum is 18.

The square root of 22223142 is about 4714.1427640664. The cubic root of 22223142 is about 281.1481005668.

Adding to 22223142 its reverse (24132222), we get a palindrome (46355364).

The spelling of 22223142 in words is "twenty-two million, two hundred twenty-three thousand, one hundred forty-two".