126605393 has 8 divisors (see below), whose sum is σ = 129468456. Its totient is φ = 123760000.

The previous prime is 126605389. The next prime is 126605431. The reversal of 126605393 is 393506621.

It can be written as a sum of positive squares in 4 ways, for example, as 14922769 + 111682624 = 3863^2 + 10568^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126605393 - 2² = 126605389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (126605293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10643 + ... + 19143.

It is an arithmetic number, because the mean of its divisors is an integer number (16183557).

Almost surely, 2^126605393 is an apocalyptic number.

It is an amenable number.

126605393 is a deficient number, since it is larger than the sum of its proper divisors (2863063).

126605393 is an equidigital number, since it uses as much as digits as its factorization.

126605393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8835.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 126605393 is about 11251.9061940633. The cubic root of 126605393 is about 502.1314251430.

The spelling of 126605393 in words is "one hundred twenty-six million, six hundred five thousand, three hundred ninety-three".