126871779 has 16 divisors (see below), whose sum is σ = 174165248. Its totient is φ = 82091232.

The previous prime is 126871777. The next prime is 126871793. The reversal of 126871779 is 977178621.

It is not a de Polignac number, because 126871779 - 2¹ = 126871777 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126871777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52884 + ... + 55230.

It is an arithmetic number, because the mean of its divisors is an integer number (10885328).

Almost surely, 2^126871779 is an apocalyptic number.

126871779 is a deficient number, since it is larger than the sum of its proper divisors (47293469).

126871779 is a wasteful number, since it uses less digits than its factorization.

126871779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2874.

The product of its digits is 296352, while the sum is 48.

The square root of 126871779 is about 11263.7373460144. The cubic root of 126871779 is about 502.4833508506.

The spelling of 126871779 in words is "one hundred twenty-six million, eight hundred seventy-one thousand, seven hundred seventy-nine".