345121 has 8 divisors (see below), whose sum is σ = 403200. Its totient is φ = 289248.

The previous prime is 345109. The next prime is 345133. The reversal of 345121 is 121543.

It is an interprime number because it is at equal distance from previous prime (345109) and next prime (345133).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 345121 - 2⁵ = 345089 is a prime.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 345095 and 345104.

It is not an unprimeable number, because it can be changed into a prime (345181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196 + ... + 853.

It is an arithmetic number, because the mean of its divisors is an integer number (50400).

2³⁴⁵¹²¹ is an apocalyptic number.

It is an amenable number.

345121 is a deficient number, since it is larger than the sum of its proper divisors (58079).

345121 is a wasteful number, since it uses less digits than its factorization.

345121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103.

The product of its digits is 120, while the sum is 16.

The square root of 345121 is about 587.4699992340. The cubic root of 345121 is about 70.1439893265.

Adding to 345121 its reverse (121543), we get a palindrome (466664).

The spelling of 345121 in words is "three hundred forty-five thousand, one hundred twenty-one".