126262517 has 2 divisors, whose sum is σ = 126262518. Its totient is φ = 126262516.

The previous prime is 126262489. The next prime is 126262541. The reversal of 126262517 is 715262621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102535876 + 23726641 = 10126^2 + 4871^2 .

It is an emirp because it is prime and its reverse (715262621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126262517 - 2⁸ = 126262261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126262547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63131258 + 63131259.

It is an arithmetic number, because the mean of its divisors is an integer number (63131259).

Almost surely, 2^126262517 is an apocalyptic number.

It is an amenable number.

126262517 is a deficient number, since it is larger than the sum of its proper divisors (1).

126262517 is an equidigital number, since it uses as much as digits as its factorization.

126262517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 32.

The square root of 126262517 is about 11236.6595125064. The cubic root of 126262517 is about 501.6777202133.

The spelling of 126262517 in words is "one hundred twenty-six million, two hundred sixty-two thousand, five hundred seventeen".