126118081 has 4 divisors (see below), whose sum is σ = 127894464. Its totient is φ = 124341700.

The previous prime is 126118063. The next prime is 126118093. The reversal of 126118081 is 180811621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 180811621 = 337 ⋅536533.

It is a cyclic number.

It is not a de Polignac number, because 126118081 - 2⁹ = 126117569 is a prime.

It is a super-2 number, since 2×126118081² = 31811540710245122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126118001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 888085 + ... + 888226.

It is an arithmetic number, because the mean of its divisors is an integer number (31973616).

Almost surely, 2^126118081 is an apocalyptic number.

It is an amenable number.

126118081 is a deficient number, since it is larger than the sum of its proper divisors (1776383).

126118081 is an equidigital number, since it uses as much as digits as its factorization.

126118081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776382.

The product of its (nonzero) digits is 768, while the sum is 28.

The square root of 126118081 is about 11230.2306743896. The cubic root of 126118081 is about 501.4863518050.

The spelling of 126118081 in words is "one hundred twenty-six million, one hundred eighteen thousand, eighty-one".