126756648842 has 8 divisors (see below), whose sum is σ = 190193866500. Its totient is φ = 63358693344.

The previous prime is 126756648797. The next prime is 126756648869. The reversal of 126756648842 is 248846657621.

It is a Cunningham number, because it is equal to 356029²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 126756648841 + 1 = 356029^2 + 1^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9807467 + ... + 9820382.

Almost surely, 2^126756648842 is an apocalyptic number.

126756648842 is a deficient number, since it is larger than the sum of its proper divisors (63437217658).

126756648842 is a wasteful number, since it uses less digits than its factorization.

126756648842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19631080.

The product of its digits is 30965760, while the sum is 59.

The spelling of 126756648842 in words is "one hundred twenty-six billion, seven hundred fifty-six million, six hundred forty-eight thousand, eight hundred forty-two".