126000065 has 4 divisors (see below), whose sum is σ = 151200084. Its totient is φ = 100800048.

The previous prime is 126000053. The next prime is 126000101. The reversal of 126000065 is 560000621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13300609 + 112699456 = 3647^2 + 10616^2 .

It is a cyclic number.

It is not a de Polignac number, because 126000065 - 2¹⁸ = 125737921 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12600002 + ... + 12600011.

It is an arithmetic number, because the mean of its divisors is an integer number (37800021).

Almost surely, 2^126000065 is an apocalyptic number.

It is an amenable number.

126000065 is a deficient number, since it is larger than the sum of its proper divisors (25200019).

126000065 is an equidigital number, since it uses as much as digits as its factorization.

126000065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25200018.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 126000065 is about 11224.9750556516. The cubic root of 126000065 is about 501.3298797039.

Adding to 126000065 its reverse (560000621), we get a palindrome (686000686).

The spelling of 126000065 in words is "one hundred twenty-six million, sixty-five", and thus it is an aban number.