126730117 has 4 divisors (see below), whose sum is σ = 128466220. Its totient is φ = 124994016.

The previous prime is 126730103. The next prime is 126730129. The reversal of 126730117 is 711037621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46430596 + 80299521 = 6814^2 + 8961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126730117 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 (126730147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 867942 + ... + 868087.

It is an arithmetic number, because the mean of its divisors is an integer number (32116555).

Almost surely, 2^126730117 is an apocalyptic number.

It is an amenable number.

126730117 is a deficient number, since it is larger than the sum of its proper divisors (1736103).

126730117 is an equidigital number, since it uses as much as digits as its factorization.

126730117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736102.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 126730117 is about 11257.4471795341. The cubic root of 126730117 is about 502.2962608948.

Adding to 126730117 its reverse (711037621), we get a palindrome (837767738).

The spelling of 126730117 in words is "one hundred twenty-six million, seven hundred thirty thousand, one hundred seventeen".