123412443 has 16 divisors (see below), whose sum is σ = 205153536. Its totient is φ = 64110240.

The previous prime is 123412439. The next prime is 123412447. The reversal of 123412443 is 344214321.

It is an interprime number because it is at equal distance from previous prime (123412439) and next prime (123412447).

It is not a de Polignac number, because 123412443 - 2² = 123412439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123412447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 266896 + ... + 267357.

It is an arithmetic number, because the mean of its divisors is an integer number (12822096).

Almost surely, 2^123412443 is an apocalyptic number.

123412443 is a deficient number, since it is larger than the sum of its proper divisors (81741093).

123412443 is a wasteful number, since it uses less digits than its factorization.

123412443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534274.

The product of its digits is 2304, while the sum is 24.

The square root of 123412443 is about 11109.1153113108. The cubic root of 123412443 is about 497.8742323654.

Adding to 123412443 its reverse (344214321), we get a palindrome (467626764).

The spelling of 123412443 in words is "one hundred twenty-three million, four hundred twelve thousand, four hundred forty-three".