125940350971 has 4 divisors (see below), whose sum is σ = 125966653600. Its totient is φ = 125914048344.

The previous prime is 125940350933. The next prime is 125940350981. The reversal of 125940350971 is 179053049521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125940350971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125940350981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13144131 + ... + 13153708.

It is an arithmetic number, because the mean of its divisors is an integer number (31491663400).

Almost surely, 2^125940350971 is an apocalyptic number.

125940350971 is the 204891-st hex number.

125940350971 is a deficient number, since it is larger than the sum of its proper divisors (26302629).

125940350971 is an equidigital number, since it uses as much as digits as its factorization.

125940350971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26302628.

The product of its (nonzero) digits is 340200, while the sum is 46.

The spelling of 125940350971 in words is "one hundred twenty-five billion, nine hundred forty million, three hundred fifty thousand, nine hundred seventy-one".