1420341221 has 8 divisors (see below), whose sum is σ = 1545368664. Its totient is φ = 1297566720.

The previous prime is 1420341199. The next prime is 1420341227. The reversal of 1420341221 is 1221430241.

It can be written as a sum of positive squares in 4 ways, for example, as 11464996 + 1408876225 = 3386^2 + 37535^2 .

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 1420341221 - 2⁶ = 1420341157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1420341193 and 1420341202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420341227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 561920 + ... + 564441.

It is an arithmetic number, because the mean of its divisors is an integer number (193171083).

Almost surely, 2^1420341221 is an apocalyptic number.

It is an amenable number.

1420341221 is a deficient number, since it is larger than the sum of its proper divisors (125027443).

1420341221 is a wasteful number, since it uses less digits than its factorization.

1420341221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126471.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1420341221 is about 37687.4146234522. The cubic root of 1420341221 is about 1124.0808877529.

Adding to 1420341221 its reverse (1221430241), we get a palindrome (2641771462).

The spelling of 1420341221 in words is "one billion, four hundred twenty million, three hundred forty-one thousand, two hundred twenty-one".