126840686 has 16 divisors (see below), whose sum is σ = 222068736. Its totient is φ = 53203416.

The previous prime is 126840673. The next prime is 126840691. The reversal of 126840686 is 686048621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95726 + ... + 97041.

It is an arithmetic number, because the mean of its divisors is an integer number (13879296).

Almost surely, 2^126840686 is an apocalyptic number.

126840686 is a deficient number, since it is larger than the sum of its proper divisors (95228050).

126840686 is a wasteful number, since it uses less digits than its factorization.

126840686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192823.

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 126840686 is about 11262.3570357186. The cubic root of 126840686 is about 502.4422989280.

The spelling of 126840686 in words is "one hundred twenty-six million, eight hundred forty thousand, six hundred eighty-six".