123340081 has 2 divisors, whose sum is σ = 123340082. Its totient is φ = 123340080.

The previous prime is 123340073. The next prime is 123340111. The reversal of 123340081 is 180043321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83448225 + 39891856 = 9135^2 + 6316^2 .

It is a cyclic number.

It is not a de Polignac number, because 123340081 - 2³ = 123340073 is a prime.

It is a super-2 number, since 2×123340081² = 30425551162173122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123340051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61670040 + 61670041.

It is an arithmetic number, because the mean of its divisors is an integer number (61670041).

Almost surely, 2^123340081 is an apocalyptic number.

It is an amenable number.

123340081 is a deficient number, since it is larger than the sum of its proper divisors (1).

123340081 is an equidigital number, since it uses as much as digits as its factorization.

123340081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 123340081 is about 11105.8579587531. The cubic root of 123340081 is about 497.7769050132.

It can be divided in two parts, 1233 and 40081, that added together give a palindrome (41314).

The spelling of 123340081 in words is "one hundred twenty-three million, three hundred forty thousand, eighty-one".