266424149 has 4 divisors (see below), whose sum is σ = 270791820. Its totient is φ = 262056480.

The previous prime is 266424127. The next prime is 266424167. The reversal of 266424149 is 941424662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 941424662 = 2 ⋅470712331.

It can be written as a sum of positive squares in 2 ways, for example, as 131446225 + 134977924 = 11465^2 + 11618^2 .

It is a cyclic number.

It is not a de Polignac number, because 266424149 - 2⁸ = 266423893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266424349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2183744 + ... + 2183865.

It is an arithmetic number, because the mean of its divisors is an integer number (67697955).

Almost surely, 2^266424149 is an apocalyptic number.

It is an amenable number.

266424149 is a deficient number, since it is larger than the sum of its proper divisors (4367671).

266424149 is an equidigital number, since it uses as much as digits as its factorization.

266424149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4367670.

The product of its digits is 82944, while the sum is 38.

The square root of 266424149 is about 16322.5043727977. The cubic root of 266424149 is about 643.4644070288.

The spelling of 266424149 in words is "two hundred sixty-six million, four hundred twenty-four thousand, one hundred forty-nine".