1424343421 has 2 divisors, whose sum is σ = 1424343422. Its totient is φ = 1424343420.

The previous prime is 1424343409. The next prime is 1424343443. The reversal of 1424343421 is 1243434241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1289528100 + 134815321 = 35910^2 + 11611^2 .

It is a cyclic number.

It is not a de Polignac number, because 1424343421 - 2²¹ = 1422246269 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1424343421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1424343461) 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, 712171710 + 712171711.

It is an arithmetic number, because the mean of its divisors is an integer number (712171711).

Almost surely, 2^1424343421 is an apocalyptic number.

It is an amenable number.

1424343421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1424343421 is an equidigital number, since it uses as much as digits as its factorization.

1424343421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 28.

The square root of 1424343421 is about 37740.4745730628. The cubic root of 1424343421 is about 1125.1356994500.

Adding to 1424343421 its reverse (1243434241), we get a palindrome (2667777662).

The spelling of 1424343421 in words is "one billion, four hundred twenty-four million, three hundred forty-three thousand, four hundred twenty-one".