123424065 has 12 divisors (see below), whose sum is σ = 213935124. Its totient is φ = 65826144.

The previous prime is 123424039. The next prime is 123424099. The reversal of 123424065 is 560424321.

It can be written as a sum of positive squares in 2 ways, for example, as 48566961 + 74857104 = 6969^2 + 8652^2 .

It is not a de Polignac number, because 123424065 - 2⁸ = 123423809 is a prime.

It is a super-2 number, since 2×123424065² = 30466999642248450, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1371334 + ... + 1371423.

It is an arithmetic number, because the mean of its divisors is an integer number (17827927).

Almost surely, 2^123424065 is an apocalyptic number.

123424065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123424065 is a deficient number, since it is larger than the sum of its proper divisors (90511059).

123424065 is a wasteful number, since it uses less digits than its factorization.

123424065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2742768 (or 2742765 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 123424065 is about 11109.6383829538. The cubic root of 123424065 is about 497.8898604835.

Adding to 123424065 its reverse (560424321), we get a palindrome (683848386).

The spelling of 123424065 in words is "one hundred twenty-three million, four hundred twenty-four thousand, sixty-five".