23142222 has 12 divisors (see below), whose sum is σ = 50141520. Its totient is φ = 7714068.

The previous prime is 23142211. The next prime is 23142239. The reversal of 23142222 is 22224132.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1285679 = 23142222 / (2 + 3 + 1 + 4 + 2 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 23142195 and 23142204.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 642822 + ... + 642857.

It is an arithmetic number, because the mean of its divisors is an integer number (4178460).

Almost surely, 2^23142222 is an apocalyptic number.

23142222 is an abundant number, since it is smaller than the sum of its proper divisors (26999298).

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

23142222 is a wasteful number, since it uses less digits than its factorization.

23142222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285687 (or 1285684 counting only the distinct ones).

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

The square root of 23142222 is about 4810.6363404440. The cubic root of 23142222 is about 284.9716684672.

Adding to 23142222 its reverse (22224132), we get a palindrome (45366354).

The spelling of 23142222 in words is "twenty-three million, one hundred forty-two thousand, two hundred twenty-two".