126440317 has 2 divisors, whose sum is σ = 126440318. Its totient is φ = 126440316.

The previous prime is 126440299. The next prime is 126440371. The reversal of 126440317 is 713044621.

Together with next prime (126440371) 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., 85914361 + 40525956 = 9269^2 + 6366^2 .

It is an emirp because it is prime and its reverse (713044621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126440317 - 2¹¹ = 126438269 is a prime.

It is a super-3 number, since 3×126440317³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124440317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63220158 + 63220159.

It is an arithmetic number, because the mean of its divisors is an integer number (63220159).

Almost surely, 2^126440317 is an apocalyptic number.

It is an amenable number.

126440317 is a deficient number, since it is larger than the sum of its proper divisors (1).

126440317 is an equidigital number, since it uses as much as digits as its factorization.

126440317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 126440317 is about 11244.5683331998. The cubic root of 126440317 is about 501.9130934776.

Adding to 126440317 its reverse (713044621), we get a palindrome (839484938).

The spelling of 126440317 in words is "one hundred twenty-six million, four hundred forty thousand, three hundred seventeen".