126113081 has 4 divisors (see below), whose sum is σ = 126562164. Its totient is φ = 125664000.

The previous prime is 126113077. The next prime is 126113101. The reversal of 126113081 is 180311621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65351056 + 60762025 = 8084^2 + 7795^2 .

It is a cyclic number.

It is not a de Polignac number, because 126113081 - 2² = 126113077 is a prime.

It is a super-2 number, since 2×126113081² = 31809018398625122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126113041) 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 3 ways as a sum of consecutive naturals, for example, 224120 + ... + 224681.

It is an arithmetic number, because the mean of its divisors is an integer number (31640541).

Almost surely, 2^126113081 is an apocalyptic number.

It is an amenable number.

126113081 is a deficient number, since it is larger than the sum of its proper divisors (449083).

126113081 is an equidigital number, since it uses as much as digits as its factorization.

126113081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449082.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 126113081 is about 11230.0080587683. The cubic root of 126113081 is about 501.4797245108.

The spelling of 126113081 in words is "one hundred twenty-six million, one hundred thirteen thousand, eighty-one".