126420205 has 16 divisors (see below), whose sum is σ = 161622720. Its totient is φ = 94652928.

The previous prime is 126420199. The next prime is 126420209. The reversal of 126420205 is 502024621.

It is a cyclic number.

It is not a de Polignac number, because 126420205 - 2⁹ = 126419693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126420209) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 132 + ... + 15901.

It is an arithmetic number, because the mean of its divisors is an integer number (10101420).

Almost surely, 2^126420205 is an apocalyptic number.

It is an amenable number.

126420205 is a deficient number, since it is larger than the sum of its proper divisors (35202515).

126420205 is a wasteful number, since it uses less digits than its factorization.

126420205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16140.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 126420205 is about 11243.6739991873. The cubic root of 126420205 is about 501.8864801008.

Adding to 126420205 its reverse (502024621), we get a palindrome (628444826).

The spelling of 126420205 in words is "one hundred twenty-six million, four hundred twenty thousand, two hundred five".