126771049 has 2 divisors, whose sum is σ = 126771050. Its totient is φ = 126771048.

The previous prime is 126771041. The next prime is 126771067. The reversal of 126771049 is 940177621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63489024 + 63282025 = 7968^2 + 7955^2 .

It is a cyclic number.

It is not a de Polignac number, because 126771049 - 2³ = 126771041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126770999 and 126771017.

It is not a weakly prime, because it can be changed into another prime (126771041) 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, 63385524 + 63385525.

It is an arithmetic number, because the mean of its divisors is an integer number (63385525).

Almost surely, 2^126771049 is an apocalyptic number.

It is an amenable number.

126771049 is a deficient number, since it is larger than the sum of its proper divisors (1).

126771049 is an equidigital number, since it uses as much as digits as its factorization.

126771049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 126771049 is about 11259.2650292992. The cubic root of 126771049 is about 502.3503332230.

The spelling of 126771049 in words is "one hundred twenty-six million, seven hundred seventy-one thousand, forty-nine".