1422043621 has 2 divisors, whose sum is σ = 1422043622. Its totient is φ = 1422043620.

The previous prime is 1422043561. The next prime is 1422043627. The reversal of 1422043621 is 1263402241.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1420234596 + 1809025 = 37686^2 + 1345^2 .

It is a cyclic number.

It is not a de Polignac number, because 1422043621 - 2¹³ = 1422035429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1422043627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711021810 + 711021811.

It is an arithmetic number, because the mean of its divisors is an integer number (711021811).

Almost surely, 2^1422043621 is an apocalyptic number.

It is an amenable number.

1422043621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1422043621 is an equidigital number, since it uses as much as digits as its factorization.

1422043621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 1422043621 is about 37709.9936488990. The cubic root of 1422043621 is about 1124.5298106906.

Adding to 1422043621 its reverse (1263402241), we get a palindrome (2685445862).

The spelling of 1422043621 in words is "one billion, four hundred twenty-two million, forty-three thousand, six hundred twenty-one".