126028609 has 16 divisors (see below), whose sum is σ = 149160960. Its totient is φ = 104201280.

The previous prime is 126028607. The next prime is 126028619. The reversal of 126028609 is 906820621.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 126028609 - 2¹ = 126028607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126028601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83667 + ... + 85159.

It is an arithmetic number, because the mean of its divisors is an integer number (9322560).

Almost surely, 2^126028609 is an apocalyptic number.

It is an amenable number.

126028609 is a deficient number, since it is larger than the sum of its proper divisors (23132351).

126028609 is a wasteful number, since it uses less digits than its factorization.

126028609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 126028609 is about 11226.2464341382. The cubic root of 126028609 is about 501.3677338633.

The spelling of 126028609 in words is "one hundred twenty-six million, twenty-eight thousand, six hundred nine".