126201071 has 2 divisors, whose sum is σ = 126201072. Its totient is φ = 126201070.

The previous prime is 126201041. The next prime is 126201073. The reversal of 126201071 is 170102621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126201071 - 2²² = 122006767 is a prime.

Together with 126201073, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126201073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63100535 + 63100536.

It is an arithmetic number, because the mean of its divisors is an integer number (63100536).

Almost surely, 2^126201071 is an apocalyptic number.

126201071 is a deficient number, since it is larger than the sum of its proper divisors (1).

126201071 is an equidigital number, since it uses as much as digits as its factorization.

126201071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 126201071 is about 11233.9250042004. The cubic root of 126201071 is about 501.5963260624.

Adding to 126201071 its reverse (170102621), we get a palindrome (296303692).

The spelling of 126201071 in words is "one hundred twenty-six million, two hundred one thousand, seventy-one".