1940321 has 4 divisors (see below), whose sum is σ = 2002944. Its totient is φ = 1877700.

The previous prime is 1940293. The next prime is 1940327. The reversal of 1940321 is 1230491.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1940321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1940293 and 1940302.

It is not an unprimeable number, because it can be changed into a prime (1940327) 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, 31265 + ... + 31326.

It is an arithmetic number, because the mean of its divisors is an integer number (500736).

2^1940321 is an apocalyptic number.

It is an amenable number.

1940321 is a deficient number, since it is larger than the sum of its proper divisors (62623).

1940321 is an equidigital number, since it uses as much as digits as its factorization.

1940321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62622.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1940321 is about 1392.9540552366. The cubic root of 1940321 is about 124.7262489204.

The spelling of 1940321 in words is "one million, nine hundred forty thousand, three hundred twenty-one".