126208135 has 4 divisors (see below), whose sum is σ = 151449768. Its totient is φ = 100966504.

The previous prime is 126208133. The next prime is 126208163. The reversal of 126208135 is 531802621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 531802621 = 7 ⋅75971803.

It is a cyclic number.

It is not a de Polignac number, because 126208135 - 2¹ = 126208133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126208133) 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 3 ways as a sum of consecutive naturals, for example, 12620809 + ... + 12620818.

It is an arithmetic number, because the mean of its divisors is an integer number (37862442).

Almost surely, 2^126208135 is an apocalyptic number.

126208135 is a deficient number, since it is larger than the sum of its proper divisors (25241633).

126208135 is an equidigital number, since it uses as much as digits as its factorization.

126208135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25241632.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 126208135 is about 11234.2394046059. The cubic root of 126208135 is about 501.6056847002.

The spelling of 126208135 in words is "one hundred twenty-six million, two hundred eight thousand, one hundred thirty-five".