12423577 has 2 divisors, whose sum is σ = 12423578. Its totient is φ = 12423576.

The previous prime is 12423569. The next prime is 12423581. The reversal of 12423577 is 77532421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10265616 + 2157961 = 3204^2 + 1469^2 .

It is an emirp because it is prime and its reverse (77532421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12423577 - 2³ = 12423569 is a prime.

It is not a weakly prime, because it can be changed into another prime (12423377) 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, 6211788 + 6211789.

It is an arithmetic number, because the mean of its divisors is an integer number (6211789).

Almost surely, 2^12423577 is an apocalyptic number.

It is an amenable number.

12423577 is a deficient number, since it is larger than the sum of its proper divisors (1).

12423577 is an equidigital number, since it uses as much as digits as its factorization.

12423577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11760, while the sum is 31.

The square root of 12423577 is about 3524.7094915752. The cubic root of 12423577 is about 231.6055089903.

Adding to 12423577 its reverse (77532421), we get a palindrome (89955998).

The spelling of 12423577 in words is "twelve million, four hundred twenty-three thousand, five hundred seventy-seven".