12406057 has 2 divisors, whose sum is σ = 12406058. Its totient is φ = 12406056.

The previous prime is 12406049. The next prime is 12406087. The reversal of 12406057 is 75060421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12222016 + 184041 = 3496^2 + 429^2 .

It is an emirp because it is prime and its reverse (75060421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12406057 - 2³ = 12406049 is a prime.

It is not a weakly prime, because it can be changed into another prime (12406027) 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, 6203028 + 6203029.

It is an arithmetic number, because the mean of its divisors is an integer number (6203029).

Almost surely, 2^12406057 is an apocalyptic number.

It is an amenable number.

12406057 is a deficient number, since it is larger than the sum of its proper divisors (1).

12406057 is an equidigital number, since it uses as much as digits as its factorization.

12406057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 12406057 is about 3522.2233035400. The cubic root of 12406057 is about 231.4965860543.

Adding to 12406057 its reverse (75060421), we get a palindrome (87466478).

The spelling of 12406057 in words is "twelve million, four hundred six thousand, fifty-seven".