342621121 has 4 divisors (see below), whose sum is σ = 342746244. Its totient is φ = 342496000.

The previous prime is 342621107. The next prime is 342621131. The reversal of 342621121 is 121126243.

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 144937521 + 197683600 = 12039^2 + 14060^2 .

It is a cyclic number.

It is not a de Polignac number, because 342621121 - 2⁵ = 342621089 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 342621092 and 342621101.

It is not an unprimeable number, because it can be changed into a prime (342621101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58360 + ... + 63961.

It is an arithmetic number, because the mean of its divisors is an integer number (85686561).

Almost surely, 2^342621121 is an apocalyptic number.

It is an amenable number.

342621121 is a deficient number, since it is larger than the sum of its proper divisors (125123).

342621121 is a wasteful number, since it uses less digits than its factorization.

342621121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125122.

The product of its digits is 576, while the sum is 22.

The square root of 342621121 is about 18510.0275796661. The cubic root of 342621121 is about 699.7421642249.

Adding to 342621121 its reverse (121126243), we get a palindrome (463747364).

The spelling of 342621121 in words is "three hundred forty-two million, six hundred twenty-one thousand, one hundred twenty-one".