340502121 has 12 divisors (see below), whose sum is σ = 492852672. Its totient is φ = 226532376.

The previous prime is 340502111. The next prime is 340502147. The reversal of 340502121 is 121205043.

340502121 is a `hidden beast` number, since 3 + 40 + 502 + 121 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-340502121 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 340502094 and 340502103.

It is not an unprimeable number, because it can be changed into a prime (340502111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34461 + ... + 43226.

It is an arithmetic number, because the mean of its divisors is an integer number (41071056).

Almost surely, 2^340502121 is an apocalyptic number.

It is an amenable number.

340502121 is a deficient number, since it is larger than the sum of its proper divisors (152350551).

340502121 is a wasteful number, since it uses less digits than its factorization.

340502121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78180 (or 78177 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 340502121 is about 18452.6995586012. The cubic root of 340502121 is about 698.2966209469.

Adding to 340502121 its reverse (121205043), we get a palindrome (461707164).

The spelling of 340502121 in words is "three hundred forty million, five hundred two thousand, one hundred twenty-one".