126527281 has 2 divisors, whose sum is σ = 126527282. Its totient is φ = 126527280.

The previous prime is 126527273. The next prime is 126527293. The reversal of 126527281 is 182725621.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117527281 + 9000000 = 10841^2 + 3000^2 .

It is a cyclic number.

It is not a de Polignac number, because 126527281 - 2³ = 126527273 is a prime.

It is a super-2 number, since 2×126527281² = 32018305674505922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126527081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63263640 + 63263641.

It is an arithmetic number, because the mean of its divisors is an integer number (63263641).

Almost surely, 2^126527281 is an apocalyptic number.

It is an amenable number.

126527281 is a deficient number, since it is larger than the sum of its proper divisors (1).

126527281 is an equidigital number, since it uses as much as digits as its factorization.

126527281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 34.

The square root of 126527281 is about 11248.4346022013. The cubic root of 126527281 is about 502.0281368652.

The spelling of 126527281 in words is "one hundred twenty-six million, five hundred twenty-seven thousand, two hundred eighty-one".