324202421 has 4 divisors (see below), whose sum is σ = 327544812. Its totient is φ = 320860032.

The previous prime is 324202391. The next prime is 324202423. The reversal of 324202421 is 124202423.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124202423 = 8467 ⋅14669.

It can be written as a sum of positive squares in 2 ways, for example, as 241647025 + 82555396 = 15545^2 + 9086^2 .

It is a cyclic number.

It is not a de Polignac number, because 324202421 - 2⁶ = 324202357 is a prime.

It is a super-2 number, since 2×324202421² = 210214419564522482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 324202393 and 324202402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (324202423) 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, 1671050 + ... + 1671243.

It is an arithmetic number, because the mean of its divisors is an integer number (81886203).

Almost surely, 2^324202421 is an apocalyptic number.

It is an amenable number.

324202421 is a deficient number, since it is larger than the sum of its proper divisors (3342391).

324202421 is an equidigital number, since it uses as much as digits as its factorization.

324202421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3342390.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 324202421 is about 18005.6219276092. The cubic root of 324202421 is about 686.9715492132.

Adding to 324202421 its reverse (124202423), we get a palindrome (448404844).

The spelling of 324202421 in words is "three hundred twenty-four million, two hundred two thousand, four hundred twenty-one".