240213739 has 2 divisors, whose sum is σ = 240213740. Its totient is φ = 240213738.

The previous prime is 240213737. The next prime is 240213749. The reversal of 240213739 is 937312042.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 240213739 - 2¹ = 240213737 is a prime.

Together with 240213737, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 240213739.

It is not a weakly prime, because it can be changed into another prime (240213737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120106869 + 120106870.

It is an arithmetic number, because the mean of its divisors is an integer number (120106870).

Almost surely, 2^240213739 is an apocalyptic number.

240213739 is a deficient number, since it is larger than the sum of its proper divisors (1).

240213739 is an equidigital number, since it uses as much as digits as its factorization.

240213739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 240213739 is about 15498.8302461831. The cubic root of 240213739 is about 621.6309288882.

The spelling of 240213739 in words is "two hundred forty million, two hundred thirteen thousand, seven hundred thirty-nine".