8131726742 has 16 divisors (see below), whose sum is σ = 12841382400. Its totient is φ = 3851326440.

The previous prime is 8131726717. The next prime is 8131726747. The reversal of 8131726742 is 2476271318.

It is a super-2 number, since 2×8131726742² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8131726742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8131726747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420359 + ... + 439277.

It is an arithmetic number, because the mean of its divisors is an integer number (802586400).

Almost surely, 2^8131726742 is an apocalyptic number.

8131726742 is a deficient number, since it is larger than the sum of its proper divisors (4709655658).

8131726742 is a wasteful number, since it uses less digits than its factorization.

8131726742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30251.

The product of its digits is 112896, while the sum is 41.

The square root of 8131726742 is about 90176.0874178959. The cubic root of 8131726742 is about 2010.9175238956.

The spelling of 8131726742 in words is "eight billion, one hundred thirty-one million, seven hundred twenty-six thousand, seven hundred forty-two".