1420213321 has 4 divisors (see below), whose sum is σ = 1439668372. Its totient is φ = 1400758272.

The previous prime is 1420213283. The next prime is 1420213343. The reversal of 1420213321 is 1233120241.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 507871296 + 912342025 = 22536^2 + 30205^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420213321 - 2²⁹ = 883342409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420213021) 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, 9727416 + ... + 9727561.

It is an arithmetic number, because the mean of its divisors is an integer number (359917093).

Almost surely, 2^1420213321 is an apocalyptic number.

It is an amenable number.

1420213321 is a deficient number, since it is larger than the sum of its proper divisors (19455051).

1420213321 is an equidigital number, since it uses as much as digits as its factorization.

1420213321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19455050.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1420213321 is about 37685.7177323187. The cubic root of 1420213321 is about 1124.0471460343.

Adding to 1420213321 its reverse (1233120241), we get a palindrome (2653333562).

The spelling of 1420213321 in words is "one billion, four hundred twenty million, two hundred thirteen thousand, three hundred twenty-one".