123724841 has 2 divisors, whose sum is σ = 123724842. Its totient is φ = 123724840.

The previous prime is 123724763. The next prime is 123724871. The reversal of 123724841 is 148427321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122766400 + 958441 = 11080^2 + 979^2 .

It is a cyclic number.

It is not a de Polignac number, because 123724841 - 2¹⁸ = 123462697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123724798 and 123724807.

It is not a weakly prime, because it can be changed into another prime (123724871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61862420 + 61862421.

It is an arithmetic number, because the mean of its divisors is an integer number (61862421).

Almost surely, 2^123724841 is an apocalyptic number.

It is an amenable number.

123724841 is a deficient number, since it is larger than the sum of its proper divisors (1).

123724841 is an equidigital number, since it uses as much as digits as its factorization.

123724841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 32.

The square root of 123724841 is about 11123.1668602067. The cubic root of 123724841 is about 498.2939735682.

The spelling of 123724841 in words is "one hundred twenty-three million, seven hundred twenty-four thousand, eight hundred forty-one".