123442312 has 16 divisors (see below), whose sum is σ = 264519360. Its totient is φ = 52903824.

The previous prime is 123442303. The next prime is 123442381. The reversal of 123442312 is 213244321.

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 3 ways as a sum of consecutive naturals, for example, 1102108 + ... + 1102219.

It is an arithmetic number, because the mean of its divisors is an integer number (16532460).

Almost surely, 2^123442312 is an apocalyptic number.

It is an amenable number.

123442312 is an abundant number, since it is smaller than the sum of its proper divisors (141077048).

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

123442312 is a wasteful number, since it uses less digits than its factorization.

123442312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2204340 (or 2204336 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 123442312 is about 11110.4595764532. The cubic root of 123442312 is about 497.9143952683.

Adding to 123442312 its reverse (213244321), we get a palindrome (336686633).

The spelling of 123442312 in words is "one hundred twenty-three million, four hundred forty-two thousand, three hundred twelve".