126064181 has 2 divisors, whose sum is σ = 126064182. Its totient is φ = 126064180.

The previous prime is 126064153. The next prime is 126064283. The reversal of 126064181 is 181460621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125641681 + 422500 = 11209^2 + 650^2 .

It is a cyclic number.

It is not a de Polignac number, because 126064181 - 2²² = 121869877 is a prime.

It is a super-2 number, since 2×126064181² = 31784355462401522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126064681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63032090 + 63032091.

It is an arithmetic number, because the mean of its divisors is an integer number (63032091).

Almost surely, 2^126064181 is an apocalyptic number.

It is an amenable number.

126064181 is a deficient number, since it is larger than the sum of its proper divisors (1).

126064181 is an equidigital number, since it uses as much as digits as its factorization.

126064181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 126064181 is about 11227.8306453206. The cubic root of 126064181 is about 501.4149003373.

The spelling of 126064181 in words is "one hundred twenty-six million, sixty-four thousand, one hundred eighty-one".