1161239 has 2 divisors, whose sum is σ = 1161240. Its totient is φ = 1161238.

The previous prime is 1161233. The next prime is 1161241. The reversal of 1161239 is 9321611.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1161239 - 2⁸ = 1160983 is a prime.

It is a Sophie Germain prime.

Together with 1161241, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1161233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580619 + 580620.

It is an arithmetic number, because the mean of its divisors is an integer number (580620).

2^1161239 is an apocalyptic number.

1161239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161239 is an equidigital number, since it uses as much as digits as its factorization.

1161239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 23.

The square root of 1161239 is about 1077.6079992279. The cubic root of 1161239 is about 105.1091533076.

The spelling of 1161239 in words is "one million, one hundred sixty-one thousand, two hundred thirty-nine".