126029977 has 2 divisors, whose sum is σ = 126029978. Its totient is φ = 126029976.

The previous prime is 126029923. The next prime is 126029987. The reversal of 126029977 is 779920621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85821696 + 40208281 = 9264^2 + 6341^2 .

It is an emirp because it is prime and its reverse (779920621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126029977 is a prime.

It is not a weakly prime, because it can be changed into another prime (126029987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63014988 + 63014989.

It is an arithmetic number, because the mean of its divisors is an integer number (63014989).

Almost surely, 2^126029977 is an apocalyptic number.

It is an amenable number.

126029977 is a deficient number, since it is larger than the sum of its proper divisors (1).

126029977 is an equidigital number, since it uses as much as digits as its factorization.

126029977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 126029977 is about 11226.3073626193. The cubic root of 126029977 is about 501.3695479186.

The spelling of 126029977 in words is "one hundred twenty-six million, twenty-nine thousand, nine hundred seventy-seven".