125428879 has 2 divisors, whose sum is σ = 125428880. Its totient is φ = 125428878.

The previous prime is 125428859. The next prime is 125428889. The reversal of 125428879 is 978824521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125428879 - 2⁵ = 125428847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125428859) 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 as a sum of consecutive naturals, namely, 62714439 + 62714440.

It is an arithmetic number, because the mean of its divisors is an integer number (62714440).

Almost surely, 2^125428879 is an apocalyptic number.

125428879 is a deficient number, since it is larger than the sum of its proper divisors (1).

125428879 is an equidigital number, since it uses as much as digits as its factorization.

125428879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 46.

The square root of 125428879 is about 11199.5035157814. The cubic root of 125428879 is about 500.5711859115.

The spelling of 125428879 in words is "one hundred twenty-five million, four hundred twenty-eight thousand, eight hundred seventy-nine".