123365449 has 9 divisors (see below), whose sum is σ = 128100583. Its totient is φ = 118800472.

The previous prime is 123365441. The next prime is 123365479. The reversal of 123365449 is 944563321.

The square root of 123365449 is 11107.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 64689849 + 58675600 = 8043^2 + 7660^2 .

It is not a de Polignac number, because 123365449 - 2³ = 123365441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123365441) 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 in 8 ways as a sum of consecutive naturals, for example, 321912 + ... + 322294.

Almost surely, 2^123365449 is an apocalyptic number.

123365449 is the 11107-th square number.

123365449 is the 5554-th centered octagonal number.

It is an amenable number.

123365449 is a deficient number, since it is larger than the sum of its proper divisors (4735134).

123365449 is an frugal number, since it uses more digits than its factorization.

123365449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824 (or 412 counting only the distinct ones).

The product of its digits is 77760, while the sum is 37.

The cubic root of 123365449 is about 497.8110294676.

The spelling of 123365449 in words is "one hundred twenty-three million, three hundred sixty-five thousand, four hundred forty-nine".