240851 has 8 divisors (see below), whose sum is σ = 263424. Its totient is φ = 218880.

The previous prime is 240841. The next prime is 240853. The reversal of 240851 is 158042.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 240851 - 2¹⁴ = 224467 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 (240853) 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 7 ways as a sum of consecutive naturals, for example, 1166 + ... + 1356.

It is an arithmetic number, because the mean of its divisors is an integer number (32928).

2²⁴⁰⁸⁵¹ is an apocalyptic number.

240851 is a deficient number, since it is larger than the sum of its proper divisors (22573).

240851 is a wasteful number, since it uses less digits than its factorization.

240851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 240851 is about 490.7657282248. The cubic root of 240851 is about 62.2180149980.

Multiplying 240851 by its product of nonzero digits (320), we get a triangular number (77072320 = T₁₂₄₁₅).

Adding to 240851 its reverse (158042), we get a palindrome (398893).

The spelling of 240851 in words is "two hundred forty thousand, eight hundred fifty-one".