1422430621 has 2 divisors, whose sum is σ = 1422430622. Its totient is φ = 1422430620.

The previous prime is 1422430577. The next prime is 1422430637. The reversal of 1422430621 is 1260342241.

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., 1302199396 + 120231225 = 36086^2 + 10965^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1422430621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1422430021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711215310 + 711215311.

It is an arithmetic number, because the mean of its divisors is an integer number (711215311).

Almost surely, 2^1422430621 is an apocalyptic number.

It is an amenable number.

1422430621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1422430621 is an equidigital number, since it uses as much as digits as its factorization.

1422430621 is an evil number, because the sum of its binary digits is even.

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

The square root of 1422430621 is about 37715.1245656169. The cubic root of 1422430621 is about 1124.6318126165.

Adding to 1422430621 its reverse (1260342241), we get a palindrome (2682772862).

The spelling of 1422430621 in words is "one billion, four hundred twenty-two million, four hundred thirty thousand, six hundred twenty-one".