126261049 has 2 divisors, whose sum is σ = 126261050. Its totient is φ = 126261048.

The previous prime is 126261001. The next prime is 126261059. The reversal of 126261049 is 940162621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96884649 + 29376400 = 9843^2 + 5420^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126261049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126261049.

It is not a weakly prime, because it can be changed into another prime (126261059) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63130524 + 63130525.

It is an arithmetic number, because the mean of its divisors is an integer number (63130525).

Almost surely, 2^126261049 is an apocalyptic number.

It is an amenable number.

126261049 is a deficient number, since it is larger than the sum of its proper divisors (1).

126261049 is an equidigital number, since it uses as much as digits as its factorization.

126261049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 126261049 is about 11236.5941904120. The cubic root of 126261049 is about 501.6757759420.

The spelling of 126261049 in words is "one hundred twenty-six million, two hundred sixty-one thousand, forty-nine".