126680281 has 16 divisors (see below), whose sum is σ = 156620800. Its totient is φ = 99776448.

The previous prime is 126680273. The next prime is 126680287. The reversal of 126680281 is 182086621.

It is a cyclic number.

It is not a de Polignac number, because 126680281 - 2³ = 126680273 is a prime.

It is a super-2 number, since 2×126680281² = 32095787188477922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126680287) 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 15 ways as a sum of consecutive naturals, for example, 17800 + ... + 23878.

It is an arithmetic number, because the mean of its divisors is an integer number (9788800).

Almost surely, 2^126680281 is an apocalyptic number.

It is an amenable number.

126680281 is a deficient number, since it is larger than the sum of its proper divisors (29940519).

126680281 is a wasteful number, since it uses less digits than its factorization.

126680281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6328.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 126680281 is about 11255.2334938019. The cubic root of 126680281 is about 502.2304104112.

The spelling of 126680281 in words is "one hundred twenty-six million, six hundred eighty thousand, two hundred eighty-one".