326742121 has 4 divisors (see below), whose sum is σ = 326781072. Its totient is φ = 326703172.

The previous prime is 326742109. The next prime is 326742127. The reversal of 326742121 is 121247623.

It is the 7380-th star number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 326742121 - 2⁵ = 326742089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 326742121.

It is not an unprimeable number, because it can be changed into a prime (326742127) 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, 1135 + ... + 25588.

It is an arithmetic number, because the mean of its divisors is an integer number (81695268).

Almost surely, 2^326742121 is an apocalyptic number.

It is an amenable number.

326742121 is a deficient number, since it is larger than the sum of its proper divisors (38951).

326742121 is a wasteful number, since it uses less digits than its factorization.

326742121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38950.

The product of its digits is 4032, while the sum is 28.

The square root of 326742121 is about 18076.0095430380. The cubic root of 326742121 is about 688.7607251929.

Adding to 326742121 its reverse (121247623), we get a palindrome (447989744).

The spelling of 326742121 in words is "three hundred twenty-six million, seven hundred forty-two thousand, one hundred twenty-one".