1013239 has 2 divisors, whose sum is σ = 1013240. Its totient is φ = 1013238.

The previous prime is 1013237. The next prime is 1013249. The reversal of 1013239 is 9323101.

It is a weak prime.

It is an emirp because it is prime and its reverse (9323101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1013239 - 2¹ = 1013237 is a prime.

It is a super-2 number, since 2×1013239² = 2053306542242, which contains 22 as substring.

Together with 1013237, 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 (1013237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506619 + 506620.

It is an arithmetic number, because the mean of its divisors is an integer number (506620).

2^1013239 is an apocalyptic number.

1013239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1013239 is an equidigital number, since it uses as much as digits as its factorization.

1013239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 1013239 is about 1006.5977349468. The cubic root of 1013239 is about 100.4393667414.

The spelling of 1013239 in words is "one million, thirteen thousand, two hundred thirty-nine".