126116317 has 4 divisors (see below), whose sum is σ = 126138780. Its totient is φ = 126093856.

The previous prime is 126116303. The next prime is 126116323. The reversal of 126116317 is 713611621.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 713611621 = 439 ⋅1625539.

It can be written as a sum of positive squares in 2 ways, for example, as 89984196 + 36132121 = 9486^2 + 6011^2 .

It is a cyclic number.

It is not a de Polignac number, because 126116317 - 2¹⁵ = 126083549 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 (126116717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5409 + ... + 16777.

It is an arithmetic number, because the mean of its divisors is an integer number (31534695).

Almost surely, 2^126116317 is an apocalyptic number.

It is an amenable number.

126116317 is a deficient number, since it is larger than the sum of its proper divisors (22463).

126116317 is a wasteful number, since it uses less digits than its factorization.

126116317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22462.

The product of its digits is 1512, while the sum is 28.

The square root of 126116317 is about 11230.1521361022. The cubic root of 126116317 is about 501.4840137156.

Adding to 126116317 its reverse (713611621), we get a palindrome (839727938).

It can be divided in two parts, 1261 and 16317, that added together give a triangular number (17578 = T₁₈₇).

The spelling of 126116317 in words is "one hundred twenty-six million, one hundred sixteen thousand, three hundred seventeen".