126144771 has 4 divisors (see below), whose sum is σ = 168193032. Its totient is φ = 84096512.

The previous prime is 126144737. The next prime is 126144779. The reversal of 126144771 is 177441621.

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 126144771 - 2²⁵ = 92590339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126144779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21024126 + ... + 21024131.

It is an arithmetic number, because the mean of its divisors is an integer number (42048258).

Almost surely, 2^126144771 is an apocalyptic number.

126144771 is a deficient number, since it is larger than the sum of its proper divisors (42048261).

126144771 is an equidigital number, since it uses as much as digits as its factorization.

126144771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42048260.

The product of its digits is 9408, while the sum is 33.

The square root of 126144771 is about 11231.4189219350. The cubic root of 126144771 is about 501.5217253389.

The spelling of 126144771 in words is "one hundred twenty-six million, one hundred forty-four thousand, seven hundred seventy-one".