126240201 has 36 divisors (see below), whose sum is σ = 192726144. Its totient is φ = 82668600.

The previous prime is 126240197. The next prime is 126240209. The reversal of 126240201 is 102042621.

126240201 is a `hidden beast` number, since 1 + 262 + 402 + 0 + 1 = 666.

It is not a de Polignac number, because 126240201 - 2² = 126240197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126240209) 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 35 ways as a sum of consecutive naturals, for example, 465696 + ... + 465966.

It is an arithmetic number, because the mean of its divisors is an integer number (5353504).

Almost surely, 2^126240201 is an apocalyptic number.

It is an amenable number.

126240201 is a deficient number, since it is larger than the sum of its proper divisors (66485943).

126240201 is an frugal number, since it uses more digits than its factorization.

126240201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 126240201 is about 11235.6664688838. Note that the first 3 decimals coincide. The cubic root of 126240201 is about 501.6481624847.

Adding to 126240201 its reverse (102042621), we get a palindrome (228282822).

The spelling of 126240201 in words is "one hundred twenty-six million, two hundred forty thousand, two hundred one".