126985707782742 has 32 divisors (see below), whose sum is σ = 262328202814464. Its totient is φ = 40937481396000.

The previous prime is 126985707782723. The next prime is 126985707782819. The reversal of 126985707782742 is 247287707589621.

It is a super-2 number, since 2×126985707782742² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213453384 + ... + 214047467.

It is an arithmetic number, because the mean of its divisors is an integer number (8197756337952).

Almost surely, 2^{126985707782742} is an apocalyptic number.

126985707782742 is an abundant number, since it is smaller than the sum of its proper divisors (135342495031722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126985707782742 is a wasteful number, since it uses less digits than its factorization.

126985707782742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427502484.

The product of its (nonzero) digits is 1327656960, while the sum is 75.

The spelling of 126985707782742 in words is "one hundred twenty-six trillion, nine hundred eighty-five billion, seven hundred seven million, seven hundred eighty-two thousand, seven hundred forty-two".