1490321 has 4 divisors (see below), whose sum is σ = 1703232. Its totient is φ = 1277412.

The previous prime is 1490317. The next prime is 1490327. The reversal of 1490321 is 1230941.

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 not a de Polignac number, because 1490321 - 2² = 1490317 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1490293 and 1490302.

It is not an unprimeable number, because it can be changed into a prime (1490327) 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, 106445 + ... + 106458.

It is an arithmetic number, because the mean of its divisors is an integer number (425808).

2^1490321 is an apocalyptic number.

It is an amenable number.

1490321 is a deficient number, since it is larger than the sum of its proper divisors (212911).

1490321 is an equidigital number, since it uses as much as digits as its factorization.

1490321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212910.

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

The square root of 1490321 is about 1220.7870412156. The cubic root of 1490321 is about 114.2246774524.

The spelling of 1490321 in words is "one million, four hundred ninety thousand, three hundred twenty-one".