240261217 has 4 divisors (see below), whose sum is σ = 274584256. Its totient is φ = 205938180.

The previous prime is 240261211. The next prime is 240261223. The reversal of 240261217 is 712162042.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 712162042 = 2 ⋅356081021.

It is an interprime number because it is at equal distance from previous prime (240261211) and next prime (240261223).

It is not a de Polignac number, because 240261217 - 2²³ = 231872609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 240261191 and 240261200.

It is not an unprimeable number, because it can be changed into a prime (240261211) 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 3 ways as a sum of consecutive naturals, for example, 17161509 + ... + 17161522.

It is an arithmetic number, because the mean of its divisors is an integer number (68646064).

Almost surely, 2^240261217 is an apocalyptic number.

It is an amenable number.

240261217 is a deficient number, since it is larger than the sum of its proper divisors (34323039).

240261217 is an equidigital number, since it uses as much as digits as its factorization.

240261217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34323038.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 240261217 is about 15500.3618344863. The cubic root of 240261217 is about 621.6718810961.

The spelling of 240261217 in words is "two hundred forty million, two hundred sixty-one thousand, two hundred seventeen".