126878671 has 4 divisors (see below), whose sum is σ = 127067872. Its totient is φ = 126689472.

The previous prime is 126878663. The next prime is 126878707. The reversal of 126878671 is 176878621.

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

It is a cyclic number.

It is not a de Polignac number, because 126878671 - 2³ = 126878663 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 (126878611) 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, 93591 + ... + 94936.

It is an arithmetic number, because the mean of its divisors is an integer number (31766968).

Almost surely, 2^126878671 is an apocalyptic number.

126878671 is a deficient number, since it is larger than the sum of its proper divisors (189201).

126878671 is an equidigital number, since it uses as much as digits as its factorization.

126878671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189200.

The product of its digits is 225792, while the sum is 46.

The square root of 126878671 is about 11264.0432793913. The cubic root of 126878671 is about 502.4924494134.

The spelling of 126878671 in words is "one hundred twenty-six million, eight hundred seventy-eight thousand, six hundred seventy-one".