240451 has 4 divisors (see below), whose sum is σ = 243432. Its totient is φ = 237472.

The previous prime is 240437. The next prime is 240473. The reversal of 240451 is 154042.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 240451 - 2¹³ = 232259 is a prime.

It is a Duffinian number.

240451 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (240421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1366 + ... + 1531.

It is an arithmetic number, because the mean of its divisors is an integer number (60858).

2²⁴⁰⁴⁵¹ is an apocalyptic number.

240451 is a deficient number, since it is larger than the sum of its proper divisors (2981).

240451 is an equidigital number, since it uses as much as digits as its factorization.

240451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2980.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 240451 is about 490.3580324620. The cubic root of 240451 is about 62.1835524796.

Adding to 240451 its reverse (154042), we get a palindrome (394493).

The spelling of 240451 in words is "two hundred forty thousand, four hundred fifty-one".