126434449 has 2 divisors, whose sum is σ = 126434450. Its totient is φ = 126434448.

The previous prime is 126434431. The next prime is 126434501. The reversal of 126434449 is 944434621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115412049 + 11022400 = 10743^2 + 3320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126434449 is a prime.

It is not a weakly prime, because it can be changed into another prime (126434549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63217224 + 63217225.

It is an arithmetic number, because the mean of its divisors is an integer number (63217225).

Almost surely, 2^126434449 is an apocalyptic number.

It is an amenable number.

126434449 is a deficient number, since it is larger than the sum of its proper divisors (1).

126434449 is an equidigital number, since it uses as much as digits as its factorization.

126434449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 37.

The square root of 126434449 is about 11244.3074041935. The cubic root of 126434449 is about 501.9053288878.

The spelling of 126434449 in words is "one hundred twenty-six million, four hundred thirty-four thousand, four hundred forty-nine".