424211321 has 4 divisors (see below), whose sum is σ = 427307892. Its totient is φ = 421114752.

The previous prime is 424211299. The next prime is 424211341. The reversal of 424211321 is 123112424.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 117961321 + 306250000 = 10861^2 + 17500^2 .

It is a cyclic number.

It is not a de Polignac number, because 424211321 - 2¹⁸ = 423949177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 424211293 and 424211302.

It is not an unprimeable number, because it can be changed into a prime (424211341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1548080 + ... + 1548353.

It is an arithmetic number, because the mean of its divisors is an integer number (106826973).

Almost surely, 2^424211321 is an apocalyptic number.

It is an amenable number.

424211321 is a deficient number, since it is larger than the sum of its proper divisors (3096571).

424211321 is a wasteful number, since it uses less digits than its factorization.

424211321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3096570.

The product of its digits is 384, while the sum is 20.

The square root of 424211321 is about 20596.3909702647. The cubic root of 424211321 is about 751.3819386155.

Adding to 424211321 its reverse (123112424), we get a palindrome (547323745).

The spelling of 424211321 in words is "four hundred twenty-four million, two hundred eleven thousand, three hundred twenty-one".