126125671 has 4 divisors (see below), whose sum is σ = 144143632. Its totient is φ = 108107712.

The previous prime is 126125641. The next prime is 126125683. The reversal of 126125671 is 176521621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 176521621 = 89 ⋅1983389.

It is a cyclic number.

It is not a de Polignac number, because 126125671 - 2⁷ = 126125543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126125641) 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, 9008970 + ... + 9008983.

It is an arithmetic number, because the mean of its divisors is an integer number (36035908).

Almost surely, 2^126125671 is an apocalyptic number.

126125671 is a deficient number, since it is larger than the sum of its proper divisors (18017961).

126125671 is an equidigital number, since it uses as much as digits as its factorization.

126125671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18017960.

The product of its digits is 5040, while the sum is 31.

The square root of 126125671 is about 11230.5685964692. The cubic root of 126125671 is about 501.4964117029.

The spelling of 126125671 in words is "one hundred twenty-six million, one hundred twenty-five thousand, six hundred seventy-one".