126305149 has 2 divisors, whose sum is σ = 126305150. Its totient is φ = 126305148.

The previous prime is 126305143. The next prime is 126305209. The reversal of 126305149 is 941503621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78943225 + 47361924 = 8885^2 + 6882^2 .

It is a cyclic number.

It is not a de Polignac number, because 126305149 - 2⁹ = 126304637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126305149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126305143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63152574 + 63152575.

It is an arithmetic number, because the mean of its divisors is an integer number (63152575).

Almost surely, 2^126305149 is an apocalyptic number.

It is an amenable number.

126305149 is a deficient number, since it is larger than the sum of its proper divisors (1).

126305149 is an equidigital number, since it uses as much as digits as its factorization.

126305149 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 126305149 is about 11238.5563574687. The cubic root of 126305149 is about 501.7341769734.

The spelling of 126305149 in words is "one hundred twenty-six million, three hundred five thousand, one hundred forty-nine".