240139 has 2 divisors, whose sum is σ = 240140. Its totient is φ = 240138.

The previous prime is 240131. The next prime is 240151. The reversal of 240139 is 931042.

240139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 240139 - 2³ = 240131 is a prime.

It is not a weakly prime, because it can be changed into another prime (240131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120069 + 120070.

It is an arithmetic number, because the mean of its divisors is an integer number (120070).

2²⁴⁰¹³⁹ is an apocalyptic number.

240139 is a deficient number, since it is larger than the sum of its proper divisors (1).

240139 is an equidigital number, since it uses as much as digits as its factorization.

240139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 240139 is about 490.0397943025. The cubic root of 240139 is about 62.1566451736.

It can be divided in two parts, 2401 and 39, that multiplied together give a palindrome (93639).

The spelling of 240139 in words is "two hundred forty thousand, one hundred thirty-nine".