126505433 has 4 divisors (see below), whose sum is σ = 126649908. Its totient is φ = 126360960.

The previous prime is 126505411. The next prime is 126505469. The reversal of 126505433 is 334505621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9259849 + 117245584 = 3043^2 + 10828^2 .

It is a cyclic number.

It is not a de Polignac number, because 126505433 - 2¹⁴ = 126489049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126505396 and 126505405.

It is not an unprimeable number, because it can be changed into a prime (126505403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70916 + ... + 72677.

It is an arithmetic number, because the mean of its divisors is an integer number (31662477).

Almost surely, 2^126505433 is an apocalyptic number.

It is an amenable number.

126505433 is a deficient number, since it is larger than the sum of its proper divisors (144475).

126505433 is an equidigital number, since it uses as much as digits as its factorization.

126505433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144474.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 126505433 is about 11247.4634029189. The cubic root of 126505433 is about 501.9992394289. Note that the first 3 decimals are identical.

The spelling of 126505433 in words is "one hundred twenty-six million, five hundred five thousand, four hundred thirty-three".