1321410239 has 2 divisors, whose sum is σ = 1321410240. Its totient is φ = 1321410238.

The previous prime is 1321410199. The next prime is 1321410241. The reversal of 1321410239 is 9320141231.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321410239 is a prime.

It is a super-2 number, since 2×1321410239² = 3492250039468074242, which contains 22 as substring.

Together with 1321410241, 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 (1321410269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660705119 + 660705120.

It is an arithmetic number, because the mean of its divisors is an integer number (660705120).

Almost surely, 2^1321410239 is an apocalyptic number.

1321410239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321410239 is an equidigital number, since it uses as much as digits as its factorization.

1321410239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1321410239 is about 36351.2068437899. The cubic root of 1321410239 is about 1097.3518223646.

The spelling of 1321410239 in words is "one billion, three hundred twenty-one million, four hundred ten thousand, two hundred thirty-nine".