1420124221 has 2 divisors, whose sum is σ = 1420124222. Its totient is φ = 1420124220.

The previous prime is 1420124207. The next prime is 1420124309. The reversal of 1420124221 is 1224210241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1016716996 + 403407225 = 31886^2 + 20085^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420124221 - 2¹⁹ = 1419599933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1420124021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710062110 + 710062111.

It is an arithmetic number, because the mean of its divisors is an integer number (710062111).

Almost surely, 2^1420124221 is an apocalyptic number.

It is an amenable number.

1420124221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420124221 is an equidigital number, since it uses as much as digits as its factorization.

1420124221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1420124221 is about 37684.5355683203. The cubic root of 1420124221 is about 1124.0236390739.

Adding to 1420124221 its reverse (1224210241), we get a palindrome (2644334462).

The spelling of 1420124221 in words is "one billion, four hundred twenty million, one hundred twenty-four thousand, two hundred twenty-one".