123142222 has 16 divisors (see below), whose sum is σ = 211536000. Its totient is φ = 52666488.

The previous prime is 123142219. The next prime is 123142223. The reversal of 123142222 is 222241321.

It is a self number, because there is not a number n which added to its sum of digits gives 123142222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123142223) 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, 1828 + ... + 15799.

It is an arithmetic number, because the mean of its divisors is an integer number (13221000).

Almost surely, 2^123142222 is an apocalyptic number.

123142222 is a deficient number, since it is larger than the sum of its proper divisors (88393778).

123142222 is a wasteful number, since it uses less digits than its factorization.

123142222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18135.

The product of its digits is 384, while the sum is 19.

The square root of 123142222 is about 11096.9465169478. The cubic root of 123142222 is about 497.5105889012.

Adding to 123142222 its reverse (222241321), we get a palindrome (345383543).

Subtracting 123142222 from its reverse (222241321), we obtain a palindrome (99099099).

The spelling of 123142222 in words is "one hundred twenty-three million, one hundred forty-two thousand, two hundred twenty-two".