123243601 has 4 divisors (see below), whose sum is σ = 132723892. Its totient is φ = 113763312.

The previous prime is 123243539. The next prime is 123243613. The reversal of 123243601 is 106342321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 106342321 = 2833 ⋅37537.

It can be written as a sum of positive squares in 2 ways, for example, as 85100625 + 38142976 = 9225^2 + 6176^2 .

It is not a de Polignac number, because 123243601 - 2⁷ = 123243473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123243691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4740126 + ... + 4740151.

It is an arithmetic number, because the mean of its divisors is an integer number (33180973).

Almost surely, 2^123243601 is an apocalyptic number.

It is an amenable number.

123243601 is a deficient number, since it is larger than the sum of its proper divisors (9480291).

123243601 is an equidigital number, since it uses as much as digits as its factorization.

123243601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9480290.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 123243601 is about 11101.5134553808. The cubic root of 123243601 is about 497.6470795660.

Adding to 123243601 its reverse (106342321), we get a palindrome (229585922).

The spelling of 123243601 in words is "one hundred twenty-three million, two hundred forty-three thousand, six hundred one".