126911513 has 2 divisors, whose sum is σ = 126911514. Its totient is φ = 126911512.

The previous prime is 126911503. The next prime is 126911531. The reversal of 126911513 is 315119621.

Together with next prime (126911531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122058304 + 4853209 = 11048^2 + 2203^2 .

It is an emirp because it is prime and its reverse (315119621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126911513 is a prime.

It is a super-2 number, since 2×126911513² = 32213064263898338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126911503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63455756 + 63455757.

It is an arithmetic number, because the mean of its divisors is an integer number (63455757).

Almost surely, 2^126911513 is an apocalyptic number.

It is an amenable number.

126911513 is a deficient number, since it is larger than the sum of its proper divisors (1).

126911513 is an equidigital number, since it uses as much as digits as its factorization.

126911513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 29.

The square root of 126911513 is about 11265.5010097199. The cubic root of 126911513 is about 502.5358016784.

The spelling of 126911513 in words is "one hundred twenty-six million, nine hundred eleven thousand, five hundred thirteen".