240199243 has 2 divisors, whose sum is σ = 240199244. Its totient is φ = 240199242.

The previous prime is 240199231. The next prime is 240199277. The reversal of 240199243 is 342991042.

It is an a-pointer prime, because the next prime (240199277) can be obtained adding 240199243 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240199243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 240199199 and 240199208.

It is not a weakly prime, because it can be changed into another prime (240199283) 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 as a sum of consecutive naturals, namely, 120099621 + 120099622.

It is an arithmetic number, because the mean of its divisors is an integer number (120099622).

Almost surely, 2^240199243 is an apocalyptic number.

240199243 is a deficient number, since it is larger than the sum of its proper divisors (1).

240199243 is an equidigital number, since it uses as much as digits as its factorization.

240199243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 240199243 is about 15498.3625909320. The cubic root of 240199243 is about 621.6184242701.

The spelling of 240199243 in words is "two hundred forty million, one hundred ninety-nine thousand, two hundred forty-three".