126434406605 has 8 divisors (see below), whose sum is σ = 163392156312. Its totient is φ = 93366946368.

The previous prime is 126434406563. The next prime is 126434406611. The reversal of 126434406605 is 506604434621.

It can be written as a sum of positive squares in 4 ways, for example, as 7093176841 + 119341229764 = 84221^2 + 345458^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 126434406605 - 2¹² = 126434402509 is a prime.

It is a Duffinian number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 972572294 + ... + 972572423.

It is an arithmetic number, because the mean of its divisors is an integer number (20424019539).

Almost surely, 2^126434406605 is an apocalyptic number.

It is an amenable number.

126434406605 is a deficient number, since it is larger than the sum of its proper divisors (36957749707).

126434406605 is a wasteful number, since it uses less digits than its factorization.

126434406605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945144735.

The product of its (nonzero) digits is 414720, while the sum is 41.

The spelling of 126434406605 in words is "one hundred twenty-six billion, four hundred thirty-four million, four hundred six thousand, six hundred five".