126805439 has 8 divisors (see below), whose sum is σ = 127783920. Its totient is φ = 125830656.

The previous prime is 126805433. The next prime is 126805447. The reversal of 126805439 is 934508621.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 126805439 - 2¹⁶ = 126739903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126805433) by changing a digit.

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, 126689 + ... + 127685.

It is an arithmetic number, because the mean of its divisors is an integer number (15972990).

Almost surely, 2^126805439 is an apocalyptic number.

126805439 is a deficient number, since it is larger than the sum of its proper divisors (978481).

126805439 is an equidigital number, since it uses as much as digits as its factorization.

126805439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 126805439 is about 11260.7921124582. The cubic root of 126805439 is about 502.3957543875.

The spelling of 126805439 in words is "one hundred twenty-six million, eight hundred five thousand, four hundred thirty-nine".