126719771 has 2 divisors, whose sum is σ = 126719772. Its totient is φ = 126719770.

The previous prime is 126719743. The next prime is 126719777. The reversal of 126719771 is 177917621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126719771 - 2¹⁴ = 126703387 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (126719777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63359885 + 63359886.

It is an arithmetic number, because the mean of its divisors is an integer number (63359886).

Almost surely, 2^126719771 is an apocalyptic number.

126719771 is a deficient number, since it is larger than the sum of its proper divisors (1).

126719771 is an equidigital number, since it uses as much as digits as its factorization.

126719771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37044, while the sum is 41.

The square root of 126719771 is about 11256.9876521208. The cubic root of 126719771 is about 502.2825916932.

The spelling of 126719771 in words is "one hundred twenty-six million, seven hundred nineteen thousand, seven hundred seventy-one".