240247 has 6 divisors (see below), whose sum is σ = 279528. Its totient is φ = 205884.

The previous prime is 240209. The next prime is 240257. The reversal of 240247 is 742042.

It is not a de Polignac number, because 240247 - 2¹⁵ = 207479 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 (240257) 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, 2403 + ... + 2500.

It is an arithmetic number, because the mean of its divisors is an integer number (46588).

2²⁴⁰²⁴⁷ is an apocalyptic number.

240247 is a deficient number, since it is larger than the sum of its proper divisors (39281).

240247 is an equidigital number, since it uses as much as digits as its factorization.

240247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4917 (or 4910 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 240247 is about 490.1499770478. The cubic root of 240247 is about 62.1659618771.

Adding to 240247 its reverse (742042), we get a palindrome (982289).

The spelling of 240247 in words is "two hundred forty thousand, two hundred forty-seven", and thus it is an iban number.