126205065 has 24 divisors (see below), whose sum is σ = 250006848. Its totient is φ = 57693600.

The previous prime is 126205063. The next prime is 126205097. The reversal of 126205065 is 560502621.

It is not a de Polignac number, because 126205065 - 2¹ = 126205063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126205063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200011 + ... + 200640.

It is an arithmetic number, because the mean of its divisors is an integer number (10416952).

Almost surely, 2^126205065 is an apocalyptic number.

126205065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126205065 is a deficient number, since it is larger than the sum of its proper divisors (123801783).

126205065 is a wasteful number, since it uses less digits than its factorization.

126205065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400669 (or 400666 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 126205065 is about 11234.1027679116. The cubic root of 126205065 is about 501.6016174982.

Adding to 126205065 its reverse (560502621), we get a palindrome (686707686).

The spelling of 126205065 in words is "one hundred twenty-six million, two hundred five thousand, sixty-five".