123449 has 2 divisors, whose sum is σ = 123450. Its totient is φ = 123448.

The previous prime is 123439. The next prime is 123457. The reversal of 123449 is 944321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110224 + 13225 = 332^2 + 115^2 .

It is a cyclic number.

It is not a de Polignac number, because 123449 - 2⁴ = 123433 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 10 and base 15.

It is not a weakly prime, because it can be changed into another prime (123419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61724 + 61725.

It is an arithmetic number, because the mean of its divisors is an integer number (61725).

2¹²³⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

123449 is a deficient number, since it is larger than the sum of its proper divisors (1).

123449 is an equidigital number, since it uses as much as digits as its factorization.

123449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 23.

The square root of 123449 is about 351.3530987483. The cubic root of 123449 is about 49.7923387299.

The spelling of 123449 in words is "one hundred twenty-three thousand, four hundred forty-nine".