1320959 has 8 divisors (see below), whose sum is σ = 1397760. Its totient is φ = 1245816.

The previous prime is 1320947. The next prime is 1320961. The reversal of 1320959 is 9590231.

1320959 = T₄₂ + T₄₃ + ... + T₁₉₉.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1320959 - 2²⁰ = 272383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1454 + ... + 2180.

It is an arithmetic number, because the mean of its divisors is an integer number (174720).

2^1320959 is an apocalyptic number.

1320959 is a deficient number, since it is larger than the sum of its proper divisors (76801).

1320959 is an equidigital number, since it uses as much as digits as its factorization.

1320959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 1320959 is about 1149.3298047123. The cubic root of 1320959 is about 109.7226899183.

The spelling of 1320959 in words is "one million, three hundred twenty thousand, nine hundred fifty-nine".