126533705 has 4 divisors (see below), whose sum is σ = 151840452. Its totient is φ = 101226960.

The previous prime is 126533689. The next prime is 126533713. The reversal of 126533705 is 507335621.

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 32307856 + 94225849 = 5684^2 + 9707^2 .

It is not a de Polignac number, because 126533705 - 2⁴ = 126533689 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12653366 + ... + 12653375.

It is an arithmetic number, because the mean of its divisors is an integer number (37960113).

Almost surely, 2^126533705 is an apocalyptic number.

It is an amenable number.

126533705 is a deficient number, since it is larger than the sum of its proper divisors (25306747).

126533705 is an equidigital number, since it uses as much as digits as its factorization.

126533705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25306746.

The product of its (nonzero) digits is 18900, while the sum is 32.

The square root of 126533705 is about 11248.7201494214. The cubic root of 126533705 is about 502.0366329885.

The spelling of 126533705 in words is "one hundred twenty-six million, five hundred thirty-three thousand, seven hundred five".