9112420681 has 27 divisors (see below), whose sum is σ = 11489235381. Its totient is φ = 7202954304.

The previous prime is 9112420651. The next prime is 9112420697. The reversal of 9112420681 is 1860242119.

It is a happy number.

The square root of 9112420681 is 95459.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 65367225 + 9047053456 = 8085^2 + 95116^2 .

It is not a de Polignac number, because 9112420681 - 2⁷ = 9112420553 is a prime.

It is a super-2 number, since 2×9112420681² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9112420621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 8686245 + ... + 8687293.

Almost surely, 2^9112420681 is an apocalyptic number.

9112420681 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

9112420681 is the 95459-th square number.

9112420681 is the 47730-th centered octagonal number.

It is an amenable number.

9112420681 is a deficient number, since it is larger than the sum of its proper divisors (2376814700).

9112420681 is an equidigital number, since it uses as much as digits as its factorization.

9112420681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2138 (or 1069 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The cubic root of 9112420681 is about 2088.7089147594.

The spelling of 9112420681 in words is "nine billion, one hundred twelve million, four hundred twenty thousand, six hundred eighty-one".