126609459 has 16 divisors (see below), whose sum is σ = 171085824. Its totient is φ = 83276000.

The previous prime is 126609437. The next prime is 126609467. The reversal of 126609459 is 954906621.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 126609459 - 2¹⁵ = 126576691 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126609459.

It is not an unprimeable number, because it can be changed into a prime (126609419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115504 + ... + 116594.

It is an arithmetic number, because the mean of its divisors is an integer number (10692864).

Almost surely, 2^126609459 is an apocalyptic number.

126609459 is a deficient number, since it is larger than the sum of its proper divisors (44476365).

126609459 is a wasteful number, since it uses less digits than its factorization.

126609459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 126609459 is about 11252.0868731094. The cubic root of 126609459 is about 502.1368004920.

The spelling of 126609459 in words is "one hundred twenty-six million, six hundred nine thousand, four hundred fifty-nine".