240722247 has 4 divisors (see below), whose sum is σ = 320963000. Its totient is φ = 160481496.

The previous prime is 240722233. The next prime is 240722257. The reversal of 240722247 is 742227042.

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

It is not a de Polignac number, because 240722247 - 2²⁰ = 239673671 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 (240722257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40120372 + ... + 40120377.

It is an arithmetic number, because the mean of its divisors is an integer number (80240750).

Almost surely, 2^240722247 is an apocalyptic number.

240722247 is a deficient number, since it is larger than the sum of its proper divisors (80240753).

240722247 is an equidigital number, since it uses as much as digits as its factorization.

240722247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80240752.

The product of its (nonzero) digits is 12544, while the sum is 30.

The square root of 240722247 is about 15515.2262954815. The cubic root of 240722247 is about 622.0692628349.

Adding to 240722247 its reverse (742227042), we get a palindrome (982949289).

The spelling of 240722247 in words is "two hundred forty million, seven hundred twenty-two thousand, two hundred forty-seven".