126509841 has 6 divisors (see below), whose sum is σ = 182736450. Its totient is φ = 84339888.

The previous prime is 126509819. The next prime is 126509843. The reversal of 126509841 is 148905621.

It can be written as a sum of positive squares in only one way, i.e., 84713616 + 41796225 = 9204^2 + 6465^2 .

It is not a de Polignac number, because 126509841 - 2⁶ = 126509777 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126509796 and 126509805.

It is not an unprimeable number, because it can be changed into a prime (126509843) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7028316 + ... + 7028333.

It is an arithmetic number, because the mean of its divisors is an integer number (30456075).

Almost surely, 2^126509841 is an apocalyptic number.

It is an amenable number.

126509841 is a deficient number, since it is larger than the sum of its proper divisors (56226609).

126509841 is a wasteful number, since it uses less digits than its factorization.

126509841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14056655 (or 14056652 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 126509841 is about 11247.6593565061. The cubic root of 126509841 is about 502.0050699741.

The spelling of 126509841 in words is "one hundred twenty-six million, five hundred nine thousand, eight hundred forty-one".