125042666 has 16 divisors (see below), whose sum is σ = 214505280. Its totient is φ = 53553120.

The previous prime is 125042663. The next prime is 125042689. The reversal of 125042666 is 666240521.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (125042663) 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, 32345 + ... + 36003.

It is an arithmetic number, because the mean of its divisors is an integer number (13406580).

Almost surely, 2^125042666 is an apocalyptic number.

125042666 is a deficient number, since it is larger than the sum of its proper divisors (89462614).

125042666 is a wasteful number, since it uses less digits than its factorization.

125042666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6109.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 125042666 is about 11182.2478062329. The cubic root of 125042666 is about 500.0568815287.

The spelling of 125042666 in words is "one hundred twenty-five million, forty-two thousand, six hundred sixty-six".