123744361 has 4 divisors (see below), whose sum is σ = 133263172. Its totient is φ = 114225552.

The previous prime is 123744337. The next prime is 123744367. The reversal of 123744361 is 163447321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 163447321 = 4513 ⋅36217.

It can be written as a sum of positive squares in 2 ways, for example, as 24443136 + 99301225 = 4944^2 + 9965^2 .

It is a cyclic number.

It is not a de Polignac number, because 123744361 - 2⁵ = 123744329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123744367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4759386 + ... + 4759411.

It is an arithmetic number, because the mean of its divisors is an integer number (33315793).

Almost surely, 2^123744361 is an apocalyptic number.

It is an amenable number.

123744361 is a deficient number, since it is larger than the sum of its proper divisors (9518811).

123744361 is an equidigital number, since it uses as much as digits as its factorization.

123744361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9518810.

The product of its digits is 12096, while the sum is 31.

The square root of 123744361 is about 11124.0442735545. The cubic root of 123744361 is about 498.3201773788.

The spelling of 123744361 in words is "one hundred twenty-three million, seven hundred forty-four thousand, three hundred sixty-one".