126471977 has 2 divisors, whose sum is σ = 126471978. Its totient is φ = 126471976.

The previous prime is 126471941. The next prime is 126471979. The reversal of 126471977 is 779174621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123899161 + 2572816 = 11131^2 + 1604^2 .

It is a cyclic number.

It is not a de Polignac number, because 126471977 - 2¹⁸ = 126209833 is a prime.

Together with 126471979, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (126471979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63235988 + 63235989.

It is an arithmetic number, because the mean of its divisors is an integer number (63235989).

Almost surely, 2^126471977 is an apocalyptic number.

It is an amenable number.

126471977 is a deficient number, since it is larger than the sum of its proper divisors (1).

126471977 is an equidigital number, since it uses as much as digits as its factorization.

126471977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 148176, while the sum is 44.

The square root of 126471977 is about 11245.9760358984. The cubic root of 126471977 is about 501.9549821273.

The spelling of 126471977 in words is "one hundred twenty-six million, four hundred seventy-one thousand, nine hundred seventy-seven".