125003979 has 10 divisors (see below), whose sum is σ = 186734460. Its totient is φ = 83335932.

The previous prime is 125003969. The next prime is 125004013. The reversal of 125003979 is 979300521.

It is not a de Polignac number, because 125003979 - 2⁵ = 125003947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125003909) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 771549 + ... + 771710.

It is an arithmetic number, because the mean of its divisors is an integer number (18673446).

Almost surely, 2^125003979 is an apocalyptic number.

125003979 is a deficient number, since it is larger than the sum of its proper divisors (61730481).

125003979 is an equidigital number, since it uses as much as digits as its factorization.

125003979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543271 (or 1543262 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 125003979 is about 11180.5178323725. The cubic root of 125003979 is about 500.0053052770.

The spelling of 125003979 in words is "one hundred twenty-five million, three thousand, nine hundred seventy-nine".