1301239 has 2 divisors, whose sum is σ = 1301240. Its totient is φ = 1301238.

The previous prime is 1301233. The next prime is 1301243. The reversal of 1301239 is 9321031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1301239 - 2⁹ = 1300727 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1301233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650619 + 650620.

It is an arithmetic number, because the mean of its divisors is an integer number (650620).

2^1301239 is an apocalyptic number.

1301239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301239 is an equidigital number, since it uses as much as digits as its factorization.

1301239 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1301239 is about 1140.7186331432. The cubic root of 1301239 is about 109.1739500090.

It can be divided in two parts, 1301 and 239, that added together give a triangular number (1540 = T₅₅).

The spelling of 1301239 in words is "one million, three hundred one thousand, two hundred thirty-nine".