126312081 has 16 divisors (see below), whose sum is σ = 199113600. Its totient is φ = 69689088.

The previous prime is 126312079. The next prime is 126312101. The reversal of 126312081 is 180213621.

It is not a de Polignac number, because 126312081 - 2¹ = 126312079 is a prime.

It is a super-2 number, since 2×126312081² = 31909483613101122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126312001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103096 + ... + 104313.

It is an arithmetic number, because the mean of its divisors is an integer number (12444600).

Almost surely, 2^126312081 is an apocalyptic number.

It is an amenable number.

126312081 is a deficient number, since it is larger than the sum of its proper divisors (72801519).

126312081 is a wasteful number, since it uses less digits than its factorization.

126312081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207448.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 126312081 is about 11238.8647558372. The cubic root of 126312081 is about 501.7433556905.

The spelling of 126312081 in words is "one hundred twenty-six million, three hundred twelve thousand, eighty-one".