126506687 has 2 divisors, whose sum is σ = 126506688. Its totient is φ = 126506686.

The previous prime is 126506683. The next prime is 126506713. The reversal of 126506687 is 786605621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126506687 - 2² = 126506683 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126506683) 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 as a sum of consecutive naturals, namely, 63253343 + 63253344.

It is an arithmetic number, because the mean of its divisors is an integer number (63253344).

Almost surely, 2^126506687 is an apocalyptic number.

126506687 is a deficient number, since it is larger than the sum of its proper divisors (1).

126506687 is an equidigital number, since it uses as much as digits as its factorization.

126506687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 126506687 is about 11247.5191486834. The cubic root of 126506687 is about 502.0008981323. Note that the first 3 decimals are identical.

The spelling of 126506687 in words is "one hundred twenty-six million, five hundred six thousand, six hundred eighty-seven".