126834749 has 2 divisors, whose sum is σ = 126834750. Its totient is φ = 126834748.

The previous prime is 126834731. The next prime is 126834781. The reversal of 126834749 is 947438621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63520900 + 63313849 = 7970^2 + 7957^2 .

It is a cyclic number.

It is not a de Polignac number, because 126834749 - 2⁸ = 126834493 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126839749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63417374 + 63417375.

It is an arithmetic number, because the mean of its divisors is an integer number (63417375).

Almost surely, 2^126834749 is an apocalyptic number.

It is an amenable number.

126834749 is a deficient number, since it is larger than the sum of its proper divisors (1).

126834749 is an equidigital number, since it uses as much as digits as its factorization.

126834749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 44.

The square root of 126834749 is about 11262.0934554815. The cubic root of 126834749 is about 502.4344595757.

The spelling of 126834749 in words is "one hundred twenty-six million, eight hundred thirty-four thousand, seven hundred forty-nine".