123123541 has 2 divisors, whose sum is σ = 123123542. Its totient is φ = 123123540.

The previous prime is 123123529. The next prime is 123123547. The reversal of 123123541 is 145321321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63123025 + 60000516 = 7945^2 + 7746^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123123541 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123123547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61561770 + 61561771.

It is an arithmetic number, because the mean of its divisors is an integer number (61561771).

Almost surely, 2^123123541 is an apocalyptic number.

It is an amenable number.

123123541 is a deficient number, since it is larger than the sum of its proper divisors (1).

123123541 is an equidigital number, since it uses as much as digits as its factorization.

123123541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 22.

The square root of 123123541 is about 11096.1047669892. The cubic root of 123123541 is about 497.4854297392.

Adding to 123123541 its reverse (145321321), we get a palindrome (268444862).

The spelling of 123123541 in words is "one hundred twenty-three million, one hundred twenty-three thousand, five hundred forty-one".