126510113 has 4 divisors (see below), whose sum is σ = 133168560. Its totient is φ = 119851668.

The previous prime is 126510103. The next prime is 126510193. The reversal of 126510113 is 311015621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 311015621 = 7 ⋅44430803.

It is a cyclic number.

It is not a de Polignac number, because 126510113 - 2⁸ = 126509857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (126510103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3329195 + ... + 3329232.

It is an arithmetic number, because the mean of its divisors is an integer number (33292140).

Almost surely, 2^126510113 is an apocalyptic number.

It is an amenable number.

126510113 is a deficient number, since it is larger than the sum of its proper divisors (6658447).

126510113 is an equidigital number, since it uses as much as digits as its factorization.

126510113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6658446.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 126510113 is about 11247.6714479042. The cubic root of 126510113 is about 502.0054297493.

Adding to 126510113 its reverse (311015621), we get a palindrome (437525734).

The spelling of 126510113 in words is "one hundred twenty-six million, five hundred ten thousand, one hundred thirteen".