123409043 has 2 divisors, whose sum is σ = 123409044. Its totient is φ = 123409042.

The previous prime is 123409019. The next prime is 123409067. The reversal of 123409043 is 340904321.

It is a balanced prime because it is at equal distance from previous prime (123409019) and next prime (123409067).

It is a cyclic number.

It is not a de Polignac number, because 123409043 - 2⁶ = 123408979 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123409003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61704521 + 61704522.

It is an arithmetic number, because the mean of its divisors is an integer number (61704522).

Almost surely, 2^123409043 is an apocalyptic number.

123409043 is a deficient number, since it is larger than the sum of its proper divisors (1).

123409043 is an equidigital number, since it uses as much as digits as its factorization.

123409043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 123409043 is about 11108.9622827697. The cubic root of 123409043 is about 497.8696601956.

The spelling of 123409043 in words is "one hundred twenty-three million, four hundred nine thousand, forty-three".