240739 has 2 divisors, whose sum is σ = 240740. Its totient is φ = 240738.

The previous prime is 240733. The next prime is 240743. The reversal of 240739 is 937042.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 240739 - 2⁵ = 240707 is a prime.

It is a super-2 number, since 2×240739² = 115910532242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (240733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120369 + 120370.

It is an arithmetic number, because the mean of its divisors is an integer number (120370).

2²⁴⁰⁷³⁹ is an apocalyptic number.

240739 is a deficient number, since it is larger than the sum of its proper divisors (1).

240739 is an equidigital number, since it uses as much as digits as its factorization.

240739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 240739 is about 490.6516075588. The cubic root of 240739 is about 62.2083693414.

It can be divided in two parts, 240 and 739, that added together give a palindrome (979).

The spelling of 240739 in words is "two hundred forty thousand, seven hundred thirty-nine".