340145 has 8 divisors (see below), whose sum is σ = 439656. Its totient is φ = 251136.

The previous prime is 340129. The next prime is 340169. The reversal of 340145 is 541043.

It can be written as a sum of positive squares in 4 ways, for example, as 57121 + 283024 = 239^2 + 532^2 .

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 340145 - 2⁴ = 340129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2552 + ... + 2681.

It is an arithmetic number, because the mean of its divisors is an integer number (54957).

2³⁴⁰¹⁴⁵ is an apocalyptic number.

It is an amenable number.

340145 is a deficient number, since it is larger than the sum of its proper divisors (99511).

340145 is a wasteful number, since it uses less digits than its factorization.

340145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5251.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 340145 is about 583.2195127051. The cubic root of 340145 is about 69.8052409428.

Adding to 340145 its reverse (541043), we get a palindrome (881188).

The spelling of 340145 in words is "three hundred forty thousand, one hundred forty-five".