123306541 has 2 divisors, whose sum is σ = 123306542. Its totient is φ = 123306540.

The previous prime is 123306539. The next prime is 123306551. The reversal of 123306541 is 145603321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76930441 + 46376100 = 8771^2 + 6810^2 .

It is a cyclic number.

It is not a de Polignac number, because 123306541 - 2¹ = 123306539 is a prime.

Together with 123306539, it forms a pair of twin primes.

It is equal to p_7019170 and since 123306541 and 7019170 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123306551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61653270 + 61653271.

It is an arithmetic number, because the mean of its divisors is an integer number (61653271).

Almost surely, 2^123306541 is an apocalyptic number.

It is an amenable number.

123306541 is a deficient number, since it is larger than the sum of its proper divisors (1).

123306541 is an equidigital number, since it uses as much as digits as its factorization.

123306541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 123306541 is about 11104.3478421743. The cubic root of 123306541 is about 497.7317805875.

Adding to 123306541 its reverse (145603321), we get a palindrome (268909862).

The spelling of 123306541 in words is "one hundred twenty-three million, three hundred six thousand, five hundred forty-one".