1214443421 has 2 divisors, whose sum is σ = 1214443422. Its totient is φ = 1214443420.

The previous prime is 1214443393. The next prime is 1214443459. The reversal of 1214443421 is 1243444121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 845995396 + 368448025 = 29086^2 + 19195^2 .

It is a cyclic number.

It is not a de Polignac number, because 1214443421 - 2⁶ = 1214443357 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1214443471) 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 as a sum of consecutive naturals, namely, 607221710 + 607221711.

It is an arithmetic number, because the mean of its divisors is an integer number (607221711).

Almost surely, 2^1214443421 is an apocalyptic number.

It is an amenable number.

1214443421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1214443421 is an equidigital number, since it uses as much as digits as its factorization.

1214443421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 26.

The square root of 1214443421 is about 34848.8654191209. The cubic root of 1214443421 is about 1066.9050288377.

Adding to 1214443421 its reverse (1243444121), we get a palindrome (2457887542).

The spelling of 1214443421 in words is "one billion, two hundred fourteen million, four hundred forty-three thousand, four hundred twenty-one".