126066561 has 8 divisors (see below), whose sum is σ = 168823680. Its totient is φ = 83676912.

The previous prime is 126066559. The next prime is 126066569. The reversal of 126066561 is 165660621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 126066561 - 2¹ = 126066559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126066569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91065 + ... + 92438.

It is an arithmetic number, because the mean of its divisors is an integer number (21102960).

Almost surely, 2^126066561 is an apocalyptic number.

It is an amenable number.

126066561 is a deficient number, since it is larger than the sum of its proper divisors (42757119).

126066561 is a wasteful number, since it uses less digits than its factorization.

126066561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183735.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 126066561 is about 11227.9366314564. The cubic root of 126066561 is about 501.4180557670.

The spelling of 126066561 in words is "one hundred twenty-six million, sixty-six thousand, five hundred sixty-one".