126409513 has 2 divisors, whose sum is σ = 126409514. Its totient is φ = 126409512.

The previous prime is 126409483. The next prime is 126409523. The reversal of 126409513 is 315904621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125708944 + 700569 = 11212^2 + 837^2 .

It is a cyclic number.

It is not a de Polignac number, because 126409513 - 2⁹ = 126409001 is a prime.

It is not a weakly prime, because it can be changed into another prime (126409523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63204756 + 63204757.

It is an arithmetic number, because the mean of its divisors is an integer number (63204757).

Almost surely, 2^126409513 is an apocalyptic number.

It is an amenable number.

126409513 is a deficient number, since it is larger than the sum of its proper divisors (1).

126409513 is an equidigital number, since it uses as much as digits as its factorization.

126409513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 126409513 is about 11243.1985217731. The cubic root of 126409513 is about 501.8723306708.

The spelling of 126409513 in words is "one hundred twenty-six million, four hundred nine thousand, five hundred thirteen".