1005140239 has 2 divisors, whose sum is σ = 1005140240. Its totient is φ = 1005140238.

The previous prime is 1005140237. The next prime is 1005140243. The reversal of 1005140239 is 9320415001.

It is a weak prime.

It is an emirp because it is prime and its reverse (9320415001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1005140239 - 2¹ = 1005140237 is a prime.

Together with 1005140237, 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 (1005140233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502570119 + 502570120.

It is an arithmetic number, because the mean of its divisors is an integer number (502570120).

Almost surely, 2^1005140239 is an apocalyptic number.

1005140239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005140239 is an equidigital number, since it uses as much as digits as its factorization.

1005140239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1005140239 is about 31703.9467416913. The cubic root of 1005140239 is about 1001.7104855710.

The spelling of 1005140239 in words is "one billion, five million, one hundred forty thousand, two hundred thirty-nine".