126012197 has 2 divisors, whose sum is σ = 126012198. Its totient is φ = 126012196.

The previous prime is 126012191. The next prime is 126012223. The reversal of 126012197 is 791210621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100922116 + 25090081 = 10046^2 + 5009^2 .

It is a cyclic number.

It is not a de Polignac number, because 126012197 - 2¹² = 126008101 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126012191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63006098 + 63006099.

It is an arithmetic number, because the mean of its divisors is an integer number (63006099).

Almost surely, 2^126012197 is an apocalyptic number.

It is an amenable number.

126012197 is a deficient number, since it is larger than the sum of its proper divisors (1).

126012197 is an equidigital number, since it uses as much as digits as its factorization.

126012197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 126012197 is about 11225.5154447357. The cubic root of 126012197 is about 501.3459694811.

The spelling of 126012197 in words is "one hundred twenty-six million, twelve thousand, one hundred ninety-seven".