123321142 has 24 divisors (see below), whose sum is σ = 219252096. Its totient is φ = 51852528.

The previous prime is 123321127. The next prime is 123321161. The reversal of 123321142 is 241123321.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6678 + ... + 17065.

It is an arithmetic number, because the mean of its divisors is an integer number (9135504).

Almost surely, 2^123321142 is an apocalyptic number.

123321142 is a deficient number, since it is larger than the sum of its proper divisors (95930954).

123321142 is a wasteful number, since it uses less digits than its factorization.

123321142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23812 (or 23805 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 123321142 is about 11105.0052678961. The cubic root of 123321142 is about 497.7514256521.

Adding to 123321142 its reverse (241123321), we get a palindrome (364444463).

The spelling of 123321142 in words is "one hundred twenty-three million, three hundred twenty-one thousand, one hundred forty-two".