125129866 has 8 divisors (see below), whose sum is σ = 189449280. Its totient is φ = 61980108.

The previous prime is 125129863. The next prime is 125129897. The reversal of 125129866 is 668921521.

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

It is not an unprimeable number, because it can be changed into a prime (125129863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292146 + ... + 292573.

It is an arithmetic number, because the mean of its divisors is an integer number (23681160).

Almost surely, 2^125129866 is an apocalyptic number.

125129866 is a deficient number, since it is larger than the sum of its proper divisors (64319414).

125129866 is a wasteful number, since it uses less digits than its factorization.

125129866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584828.

The product of its digits is 51840, while the sum is 40.

The square root of 125129866 is about 11186.1461638940. The cubic root of 125129866 is about 500.1730947362.

The spelling of 125129866 in words is "one hundred twenty-five million, one hundred twenty-nine thousand, eight hundred sixty-six".