126039805 has 8 divisors (see below), whose sum is σ = 151599672. Its totient is φ = 100597248.

The previous prime is 126039791. The next prime is 126039817. The reversal of 126039805 is 508930621.

It can be written as a sum of positive squares in 4 ways, for example, as 3694084 + 122345721 = 1922^2 + 11061^2 .

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 126039805 - 2⁷ = 126039677 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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26944 + ... + 31273.

It is an arithmetic number, because the mean of its divisors is an integer number (18949959).

Almost surely, 2^126039805 is an apocalyptic number.

It is an amenable number.

126039805 is a deficient number, since it is larger than the sum of its proper divisors (25559867).

126039805 is an equidigital number, since it uses as much as digits as its factorization.

126039805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58655.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 126039805 is about 11226.7450759336. The cubic root of 126039805 is about 501.3825800875.

The spelling of 126039805 in words is "one hundred twenty-six million, thirty-nine thousand, eight hundred five".