240453 has 6 divisors (see below), whose sum is σ = 347334. Its totient is φ = 160296.

The previous prime is 240437. The next prime is 240473. The reversal of 240453 is 354042.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 173889 + 66564 = 417^2 + 258^2 .

It is not a de Polignac number, because 240453 - 2⁴ = 240437 is a prime.

240453 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13350 + ... + 13367.

It is an arithmetic number, because the mean of its divisors is an integer number (57889).

2²⁴⁰⁴⁵³ is an apocalyptic number.

It is an amenable number.

240453 is a deficient number, since it is larger than the sum of its proper divisors (106881).

240453 is a wasteful number, since it uses less digits than its factorization.

240453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26723 (or 26720 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 240453 is about 490.3600717840. The cubic root of 240453 is about 62.1837248872.

Adding to 240453 its sum of digits (18), we get a triangular number (240471 = T₆₉₃).

Adding to 240453 its reverse (354042), we get a palindrome (594495).

The spelling of 240453 in words is "two hundred forty thousand, four hundred fifty-three".