123345043 has 2 divisors, whose sum is σ = 123345044. Its totient is φ = 123345042.

The previous prime is 123345029. The next prime is 123345059. The reversal of 123345043 is 340543321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123345043 - 2⁹ = 123344531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123344999 and 123345017.

It is not a weakly prime, because it can be changed into another prime (123345023) by changing a digit.

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 as a sum of consecutive naturals, namely, 61672521 + 61672522.

It is an arithmetic number, because the mean of its divisors is an integer number (61672522).

Almost surely, 2^123345043 is an apocalyptic number.

123345043 is a deficient number, since it is larger than the sum of its proper divisors (1).

123345043 is an equidigital number, since it uses as much as digits as its factorization.

123345043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 123345043 is about 11106.0813521242. The cubic root of 123345043 is about 497.7835801504.

Adding to 123345043 its reverse (340543321), we get a palindrome (463888364).

The spelling of 123345043 in words is "one hundred twenty-three million, three hundred forty-five thousand, forty-three".