125978973 has 4 divisors (see below), whose sum is σ = 167971968. Its totient is φ = 83985980.

The previous prime is 125978971. The next prime is 125978999. The reversal of 125978973 is 379879521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 125978973 - 2¹ = 125978971 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125978971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20996493 + ... + 20996498.

It is an arithmetic number, because the mean of its divisors is an integer number (41992992).

Almost surely, 2^125978973 is an apocalyptic number.

It is an amenable number.

125978973 is a deficient number, since it is larger than the sum of its proper divisors (41992995).

125978973 is an equidigital number, since it uses as much as digits as its factorization.

125978973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41992994.

The product of its digits is 952560, while the sum is 51.

The square root of 125978973 is about 11224.0355042204. The cubic root of 125978973 is about 501.3019044806.

The spelling of 125978973 in words is "one hundred twenty-five million, nine hundred seventy-eight thousand, nine hundred seventy-three".