140420239 has 2 divisors, whose sum is σ = 140420240. Its totient is φ = 140420238.

The previous prime is 140420237. The next prime is 140420243. The reversal of 140420239 is 932024041.

140420239 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 140420239 - 2¹ = 140420237 is a prime.

Together with 140420237, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140420237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70210119 + 70210120.

It is an arithmetic number, because the mean of its divisors is an integer number (70210120).

Almost surely, 2^140420239 is an apocalyptic number.

140420239 is a deficient number, since it is larger than the sum of its proper divisors (1).

140420239 is an equidigital number, since it uses as much as digits as its factorization.

140420239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 140420239 is about 11849.9045987721. The cubic root of 140420239 is about 519.7684360976.

The spelling of 140420239 in words is "one hundred forty million, four hundred twenty thousand, two hundred thirty-nine".