126017389 has 2 divisors, whose sum is σ = 126017390. Its totient is φ = 126017388.

The previous prime is 126017371. The next prime is 126017417. The reversal of 126017389 is 983710621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98664489 + 27352900 = 9933^2 + 5230^2 .

It is a cyclic number.

It is not a de Polignac number, because 126017389 - 2²⁵ = 92462957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126017369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63008694 + 63008695.

It is an arithmetic number, because the mean of its divisors is an integer number (63008695).

Almost surely, 2^126017389 is an apocalyptic number.

It is an amenable number.

126017389 is a deficient number, since it is larger than the sum of its proper divisors (1).

126017389 is an equidigital number, since it uses as much as digits as its factorization.

126017389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 126017389 is about 11225.7467012222. The cubic root of 126017389 is about 501.3528549324.

The spelling of 126017389 in words is "one hundred twenty-six million, seventeen thousand, three hundred eighty-nine".