1420321 has 8 divisors (see below), whose sum is σ = 1630784. Its totient is φ = 1211760.

The previous prime is 1420303. The next prime is 1420357. The reversal of 1420321 is 1230241.

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 1420321 - 2⁹ = 1419809 is a prime.

It is a super-4 number, since 4×1420321⁴ (a number of 26 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420301) 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, 2011 + ... + 2623.

It is an arithmetic number, because the mean of its divisors is an integer number (203848).

2^1420321 is an apocalyptic number.

It is an amenable number.

1420321 is a deficient number, since it is larger than the sum of its proper divisors (210463).

1420321 is an equidigital number, since it uses as much as digits as its factorization.

1420321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1420321 is about 1191.7722097784. The cubic root of 1420321 is about 112.4075553319.

Adding to 1420321 its reverse (1230241), we get a palindrome (2650562).

The spelling of 1420321 in words is "one million, four hundred twenty thousand, three hundred twenty-one".