1320919 has 4 divisors (see below), whose sum is σ = 1345896. Its totient is φ = 1295944.

The previous prime is 1320911. The next prime is 1320923. The reversal of 1320919 is 9190231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1320919 - 2³ = 1320911 is a prime.

It is a super-2 number, since 2×1320919² = 3489654009122, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1320893 and 1320902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12409 + ... + 12514.

It is an arithmetic number, because the mean of its divisors is an integer number (336474).

2^1320919 is an apocalyptic number.

1320919 is a deficient number, since it is larger than the sum of its proper divisors (24977).

1320919 is an equidigital number, since it uses as much as digits as its factorization.

1320919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24976.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 1320919 is about 1149.3124031350. The cubic root of 1320919 is about 109.7215824017.

The spelling of 1320919 in words is "one million, three hundred twenty thousand, nine hundred nineteen".