324420121 has 4 divisors (see below), whose sum is σ = 324553572. Its totient is φ = 324286672.

The previous prime is 324420119. The next prime is 324420139. The reversal of 324420121 is 121024423.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121024423 = 13 ⋅9309571.

It can be written as a sum of positive squares in 2 ways, for example, as 239042521 + 85377600 = 15461^2 + 9240^2 .

It is a cyclic number.

It is not a de Polignac number, because 324420121 - 2¹ = 324420119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (324420721) 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, 63010 + ... + 67963.

It is an arithmetic number, because the mean of its divisors is an integer number (81138393).

Almost surely, 2^324420121 is an apocalyptic number.

It is an amenable number.

324420121 is a deficient number, since it is larger than the sum of its proper divisors (133451).

324420121 is a wasteful number, since it uses less digits than its factorization.

324420121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133450.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 324420121 is about 18011.6662471855. Note that the first 3 decimals coincide. The cubic root of 324420121 is about 687.1252805800.

Adding to 324420121 its reverse (121024423), we get a palindrome (445444544).

The spelling of 324420121 in words is "three hundred twenty-four million, four hundred twenty thousand, one hundred twenty-one".