126740827257 has 16 divisors (see below), whose sum is σ = 188637512448. Its totient is φ = 75026281680.

The previous prime is 126740827217. The next prime is 126740827259. The reversal of 126740827257 is 752728047621.

It is a happy number.

It is not a de Polignac number, because 126740827257 - 2¹⁴ = 126740810873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126740827259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44657083 + ... + 44659920.

It is an arithmetic number, because the mean of its divisors is an integer number (11789844528).

Almost surely, 2^126740827257 is an apocalyptic number.

It is an amenable number.

126740827257 is a deficient number, since it is larger than the sum of its proper divisors (61896685191).

126740827257 is a wasteful number, since it uses less digits than its factorization.

126740827257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89317060.

The product of its (nonzero) digits is 2634240, while the sum is 51.

The spelling of 126740827257 in words is "one hundred twenty-six billion, seven hundred forty million, eight hundred twenty-seven thousand, two hundred fifty-seven".