240452405 has 4 divisors (see below), whose sum is σ = 288542892. Its totient is φ = 192361920.

The previous prime is 240452371. The next prime is 240452453. The reversal of 240452405 is 504254042.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504254042 = 2 ⋅252127021.

It can be written as a sum of positive squares in 2 ways, for example, as 57851236 + 182601169 = 7606^2 + 13513^2 .

It is not a de Polignac number, because 240452405 - 2⁶ = 240452341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24045236 + ... + 24045245.

It is an arithmetic number, because the mean of its divisors is an integer number (72135723).

Almost surely, 2^240452405 is an apocalyptic number.

It is an amenable number.

240452405 is a deficient number, since it is larger than the sum of its proper divisors (48090487).

240452405 is an equidigital number, since it uses as much as digits as its factorization.

240452405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48090486.

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 240452405 is about 15506.5278189542. The cubic root of 240452405 is about 621.8367359603.

The spelling of 240452405 in words is "two hundred forty million, four hundred fifty-two thousand, four hundred five".