126840685 has 8 divisors (see below), whose sum is σ = 157118976. Its totient is φ = 98199120.

The previous prime is 126840673. The next prime is 126840691. The reversal of 126840685 is 586048621.

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

It is not a de Polignac number, because 126840685 - 2⁷ = 126840557 is a prime.

It is a Duffinian number.

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, 409009 + ... + 409318.

It is an arithmetic number, because the mean of its divisors is an integer number (19639872).

Almost surely, 2^126840685 is an apocalyptic number.

It is an amenable number.

126840685 is a deficient number, since it is larger than the sum of its proper divisors (30278291).

126840685 is an equidigital number, since it uses as much as digits as its factorization.

126840685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818363.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 126840685 is about 11262.3569913229. The cubic root of 126840685 is about 502.4422976076.

The spelling of 126840685 in words is "one hundred twenty-six million, eight hundred forty thousand, six hundred eighty-five".