126609081 has 8 divisors (see below), whose sum is σ = 178742304. Its totient is φ = 79440960.

The previous prime is 126609031. The next prime is 126609101. The reversal of 126609081 is 180906621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 126609081 - 2⁷ = 126608953 is a prime.

It is a super-2 number, since 2×126609081² = 32059718783329122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126609001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1241215 + ... + 1241316.

It is an arithmetic number, because the mean of its divisors is an integer number (22342788).

Almost surely, 2^126609081 is an apocalyptic number.

It is an amenable number.

126609081 is a deficient number, since it is larger than the sum of its proper divisors (52133223).

126609081 is a wasteful number, since it uses less digits than its factorization.

126609081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2482551.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 126609081 is about 11252.0700762126. The cubic root of 126609081 is about 502.1363007719.

The spelling of 126609081 in words is "one hundred twenty-six million, six hundred nine thousand, eighty-one".