126305205 has 16 divisors (see below), whose sum is σ = 217633920. Its totient is φ = 62180928.

The previous prime is 126305149. The next prime is 126305209. The reversal of 126305205 is 502503621.

It is not a de Polignac number, because 126305205 - 2¹³ = 126297013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126305209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323665 + ... + 324054.

It is an arithmetic number, because the mean of its divisors is an integer number (13602120).

Almost surely, 2^126305205 is an apocalyptic number.

126305205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126305205 is a deficient number, since it is larger than the sum of its proper divisors (91328715).

126305205 is a wasteful number, since it uses less digits than its factorization.

126305205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647740.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 126305205 is about 11238.5588488916. The cubic root of 126305205 is about 501.7342511248.

Adding to 126305205 its reverse (502503621), we get a palindrome (628808826).

The spelling of 126305205 in words is "one hundred twenty-six million, three hundred five thousand, two hundred five".