126556166 has 32 divisors (see below), whose sum is σ = 219379968. Its totient is φ = 54188640.

The previous prime is 126556153. The next prime is 126556193. The reversal of 126556166 is 661655621.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32036 + ... + 35768.

It is an arithmetic number, because the mean of its divisors is an integer number (6855624).

Almost surely, 2^126556166 is an apocalyptic number.

126556166 is a deficient number, since it is larger than the sum of its proper divisors (92823802).

126556166 is a wasteful number, since it uses less digits than its factorization.

126556166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3836.

The product of its digits is 64800, while the sum is 38.

The square root of 126556166 is about 11249.7184853666. The cubic root of 126556166 is about 502.0663367413.

The spelling of 126556166 in words is "one hundred twenty-six million, five hundred fifty-six thousand, one hundred sixty-six".