240057 has 16 divisors (see below), whose sum is σ = 377280. Its totient is φ = 150336.

The previous prime is 240049. The next prime is 240059. The reversal of 240057 is 750042.

It is a happy number.

It is not a de Polignac number, because 240057 - 2³ = 240049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (240059) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 198 + ... + 720.

It is an arithmetic number, because the mean of its divisors is an integer number (23580).

2²⁴⁰⁰⁵⁷ is an apocalyptic number.

240057 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

240057 is a deficient number, since it is larger than the sum of its proper divisors (137223).

240057 is a wasteful number, since it uses less digits than its factorization.

240057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549 (or 543 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 240057 is about 489.9561204843. The cubic root of 240057 is about 62.1495695144.

Adding to 240057 its reverse (750042), we get a palindrome (990099).

The spelling of 240057 in words is "two hundred forty thousand, fifty-seven".