424322424223421 has 2 divisors, whose sum is σ = 424322424223422. Its totient is φ = 424322424223420.

The previous prime is 424322424223417. The next prime is 424322424223433. The reversal of 424322424223421 is 124322424223424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 424018685457796 + 303738765625 = 20591714^2 + 551125^2 .

It is a cyclic number.

It is not a de Polignac number, because 424322424223421 - 2² = 424322424223417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424322424213421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212161212111710 + 212161212111711.

It is an arithmetic number, because the mean of its divisors is an integer number (212161212111711).

Almost surely, 2^{424322424223421} is an apocalyptic number.

It is an amenable number.

424322424223421 is a deficient number, since it is larger than the sum of its proper divisors (1).

424322424223421 is an equidigital number, since it uses as much as digits as its factorization.

424322424223421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1179648, while the sum is 41.

Adding to 424322424223421 its reverse (124322424223424), we get a palindrome (548644848446845).

The spelling of 424322424223421 in words is "four hundred twenty-four trillion, three hundred twenty-two billion, four hundred twenty-four million, two hundred twenty-three thousand, four hundred twenty-one".