123221042 has 16 divisors (see below), whose sum is σ = 222354240. Its totient is φ = 50029488.

The previous prime is 123221041. The next prime is 123221047. The reversal of 123221042 is 240122321.

It is a self number, because there is not a number n which added to its sum of digits gives 123221042.

It is not an unprimeable number, because it can be changed into a prime (123221041) 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, 231353 + ... + 231884.

It is an arithmetic number, because the mean of its divisors is an integer number (13897140).

Almost surely, 2^123221042 is an apocalyptic number.

123221042 is a deficient number, since it is larger than the sum of its proper divisors (99133198).

123221042 is a wasteful number, since it uses less digits than its factorization.

123221042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463265.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 123221042 is about 11100.4973762440. The cubic root of 123221042 is about 497.6167139447.

Adding to 123221042 its reverse (240122321), we get a palindrome (363343363).

The spelling of 123221042 in words is "one hundred twenty-three million, two hundred twenty-one thousand, forty-two".