126100385 has 4 divisors (see below), whose sum is σ = 151320468. Its totient is φ = 100880304.

The previous prime is 126100369. The next prime is 126100399. The reversal of 126100385 is 583001621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 583001621 = 17 ⋅34294213.

It can be written as a sum of positive squares in 2 ways, for example, as 34093921 + 92006464 = 5839^2 + 9592^2 .

It is a cyclic number.

It is not a de Polignac number, because 126100385 - 2⁴ = 126100369 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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, 12610034 + ... + 12610043.

It is an arithmetic number, because the mean of its divisors is an integer number (37830117).

Almost surely, 2^126100385 is an apocalyptic number.

It is an amenable number.

126100385 is a deficient number, since it is larger than the sum of its proper divisors (25220083).

126100385 is an equidigital number, since it uses as much as digits as its factorization.

126100385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25220082.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 126100385 is about 11229.4427733526. The cubic root of 126100385 is about 501.4628956981.

The spelling of 126100385 in words is "one hundred twenty-six million, one hundred thousand, three hundred eighty-five".