240718729 has 2 divisors, whose sum is σ = 240718730. Its totient is φ = 240718728.

The previous prime is 240718697. The next prime is 240718787. The reversal of 240718729 is 927817042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194546704 + 46172025 = 13948^2 + 6795^2 .

It is a cyclic number.

It is not a de Polignac number, because 240718729 - 2⁵ = 240718697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 240718691 and 240718700.

It is not a weakly prime, because it can be changed into another prime (240718799) 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, 120359364 + 120359365.

It is an arithmetic number, because the mean of its divisors is an integer number (120359365).

Almost surely, 2^240718729 is an apocalyptic number.

It is an amenable number.

240718729 is a deficient number, since it is larger than the sum of its proper divisors (1).

240718729 is an equidigital number, since it uses as much as digits as its factorization.

240718729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 240718729 is about 15515.1129225668. The cubic root of 240718729 is about 622.0662324401.

The spelling of 240718729 in words is "two hundred forty million, seven hundred eighteen thousand, seven hundred twenty-nine".