126417289 has 2 divisors, whose sum is σ = 126417290. Its totient is φ = 126417288.

The previous prime is 126417283. The next prime is 126417299. The reversal of 126417289 is 982714621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120824064 + 5593225 = 10992^2 + 2365^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126417289 is a prime.

It is not a weakly prime, because it can be changed into another prime (126417283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63208644 + 63208645.

It is an arithmetic number, because the mean of its divisors is an integer number (63208645).

Almost surely, 2^126417289 is an apocalyptic number.

It is an amenable number.

126417289 is a deficient number, since it is larger than the sum of its proper divisors (1).

126417289 is an equidigital number, since it uses as much as digits as its factorization.

126417289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 40.

The square root of 126417289 is about 11243.5443255230. The cubic root of 126417289 is about 501.8826212445.

The spelling of 126417289 in words is "one hundred twenty-six million, four hundred seventeen thousand, two hundred eighty-nine".