125421886 has 16 divisors (see below), whose sum is σ = 200360304. Its totient is φ = 58678144.

The previous prime is 125421853. The next prime is 125421887. The reversal of 125421886 is 688124521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125421887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4780 + ... + 16543.

It is an arithmetic number, because the mean of its divisors is an integer number (12522519).

Almost surely, 2^125421886 is an apocalyptic number.

125421886 is a deficient number, since it is larger than the sum of its proper divisors (74938418).

125421886 is a wasteful number, since it uses less digits than its factorization.

125421886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21515.

The product of its digits is 30720, while the sum is 37.

The square root of 125421886 is about 11199.1913100902. The cubic root of 125421886 is about 500.5618830051.

The spelling of 125421886 in words is "one hundred twenty-five million, four hundred twenty-one thousand, eight hundred eighty-six".