126605305 has 16 divisors (see below), whose sum is σ = 156893184. Its totient is φ = 98003520.

The previous prime is 126605293. The next prime is 126605309. The reversal of 126605305 is 503506621.

It is not a de Polignac number, because 126605305 - 2⁷ = 126605177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126605309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33544 + ... + 37126.

It is an arithmetic number, because the mean of its divisors is an integer number (9805824).

Almost surely, 2^126605305 is an apocalyptic number.

It is an amenable number.

126605305 is a deficient number, since it is larger than the sum of its proper divisors (30287879).

126605305 is a wasteful number, since it uses less digits than its factorization.

126605305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3816.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 126605305 is about 11251.9022836141. The cubic root of 126605305 is about 502.1313088037.

The spelling of 126605305 in words is "one hundred twenty-six million, six hundred five thousand, three hundred five".