126435394943 has 16 divisors (see below), whose sum is σ = 148629407136. Its totient is φ = 106035402240.

The previous prime is 126435394931. The next prime is 126435394951. The reversal of 126435394943 is 349493534621.

It is a cyclic number.

It is not a de Polignac number, because 126435394943 - 2²⁸ = 126166959487 is a prime.

It is a Smith number, since the sum of its digits (53) 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126435394963) 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, 29846 + ... + 503747.

It is an arithmetic number, because the mean of its divisors is an integer number (9289337946).

Almost surely, 2^126435394943 is an apocalyptic number.

126435394943 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

126435394943 is a deficient number, since it is larger than the sum of its proper divisors (22194012193).

126435394943 is a wasteful number, since it uses less digits than its factorization.

126435394943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535274.

The product of its digits is 8398080, while the sum is 53.

The spelling of 126435394943 in words is "one hundred twenty-six billion, four hundred thirty-five million, three hundred ninety-four thousand, nine hundred forty-three".